diff --git a/CHANGES.md b/CHANGES.md
index 1d123abc19..da588454c7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,8 +1,94 @@
-Synapse vNext
-=============
+Synapse 1.64.0rc1 (2022-07-26)
+==============================
 
 As of this release, Synapse no longer allows the tasks of verifying email address ownership, and password reset confirmation, to be delegated to an identity server. For more information, see the [upgrade notes](https://matrix-org.github.io/synapse/v1.64/upgrade.html#upgrading-to-v1640).
 
+We have also stopped building `.deb` packages for Ubuntu 21.10 as it is no longer an active version of Ubuntu.
+
+
+Features
+--------
+
+- Improve error messages when media thumbnails cannot be served. ([\#13038](https://github.com/matrix-org/synapse/issues/13038))
+- Allow pagination from remote event after discovering it from [MSC3030](https://github.com/matrix-org/matrix-spec-proposals/pull/3030) `/timestamp_to_event`. ([\#13205](https://github.com/matrix-org/synapse/issues/13205))
+- Add a `room_type` field in the responses for the list room and room details admin APIs. Contributed by @andrewdoh. ([\#13208](https://github.com/matrix-org/synapse/issues/13208))
+- Add support for room version 10. ([\#13220](https://github.com/matrix-org/synapse/issues/13220))
+- Add per-room rate limiting for room joins. For each room, Synapse now monitors the rate of join events in that room, and throttles additional joins if that rate grows too large. ([\#13253](https://github.com/matrix-org/synapse/issues/13253), [\#13254](https://github.com/matrix-org/synapse/issues/13254), [\#13255](https://github.com/matrix-org/synapse/issues/13255), [\#13276](https://github.com/matrix-org/synapse/issues/13276))
+- Support Implicit TLS (TLS without using a STARTTLS upgrade, typically on port 465) for sending emails, enabled by the new option `force_tls`. Contributed by Jan Schär. ([\#13317](https://github.com/matrix-org/synapse/issues/13317))
+
+
+Bugfixes
+--------
+
+- Fix a bug introduced in Synapse 1.15.0 where adding a user through the Synapse Admin API with a phone number would fail if the `enable_email_notifs` and `email_notifs_for_new_users` options were enabled. Contributed by @thomasweston12. ([\#13263](https://github.com/matrix-org/synapse/issues/13263))
+- Fix a bug introduced in Synapse 1.40.0 where a user invited to a restricted room would be briefly unable to join. ([\#13270](https://github.com/matrix-org/synapse/issues/13270))
+- Fix a long-standing bug where, in rare instances, Synapse could store the incorrect state for a room after a state resolution. ([\#13278](https://github.com/matrix-org/synapse/issues/13278))
+- Fix a bug introduced in v1.18.0 where the `synapse_pushers` metric would overcount pushers when they are replaced. ([\#13296](https://github.com/matrix-org/synapse/issues/13296))
+- Disable autocorrection and autocapitalisation on the username text field shown during registration when using SSO. ([\#13350](https://github.com/matrix-org/synapse/issues/13350))
+- Update locked version of `frozendict` to 2.3.3, which has fixes for memory leaks affecting `/sync`. ([\#13284](https://github.com/matrix-org/synapse/issues/13284), [\#13352](https://github.com/matrix-org/synapse/issues/13352))
+
+
+Improved Documentation
+----------------------
+
+- Provide an example of using the Admin API. Contributed by @jejo86. ([\#13231](https://github.com/matrix-org/synapse/issues/13231))
+- Move the documentation for how URL previews work to the URL preview module. ([\#13233](https://github.com/matrix-org/synapse/issues/13233), [\#13261](https://github.com/matrix-org/synapse/issues/13261))
+- Add another `contrib` script to help set up worker processes. Contributed by @villepeh. ([\#13271](https://github.com/matrix-org/synapse/issues/13271))
+- Document that certain config options were added or changed in Synapse 1.62. Contributed by @behrmann. ([\#13314](https://github.com/matrix-org/synapse/issues/13314))
+- Document the new `rc_invites.per_issuer` throttling option added in Synapse 1.63. ([\#13333](https://github.com/matrix-org/synapse/issues/13333))
+- Mention that BuildKit is needed when building Docker images for tests. ([\#13338](https://github.com/matrix-org/synapse/issues/13338))
+- Improve Caddy reverse proxy documentation. ([\#13344](https://github.com/matrix-org/synapse/issues/13344))
+
+
+Deprecations and Removals
+-------------------------
+
+- Drop tables that were formerly used for groups/communities. ([\#12967](https://github.com/matrix-org/synapse/issues/12967))
+- Drop support for delegating email verification to an external server. ([\#13192](https://github.com/matrix-org/synapse/issues/13192))
+- Drop support for calling `/_matrix/client/v3/account/3pid/bind` without an `id_access_token`, which was not permitted by the spec. Contributed by @Vetchu. ([\#13239](https://github.com/matrix-org/synapse/issues/13239))
+- Stop building `.deb` packages for Ubuntu 21.10 (Impish Indri), which has reached end of life. ([\#13326](https://github.com/matrix-org/synapse/issues/13326))
+
+
+Internal Changes
+----------------
+
+- Use lower transaction isolation level when purging rooms to avoid serialization errors. Contributed by Nick @ Beeper. ([\#12942](https://github.com/matrix-org/synapse/issues/12942))
+- Remove code which incorrectly attempted to reconcile state with remote servers when processing incoming events. ([\#12943](https://github.com/matrix-org/synapse/issues/12943))
+- Make the AS login method call `Auth.get_user_by_req` for checking the AS token. ([\#13094](https://github.com/matrix-org/synapse/issues/13094))
+- Always use a version of canonicaljson that supports the C implementation of frozendict. ([\#13172](https://github.com/matrix-org/synapse/issues/13172))
+- Add prometheus counters for ephemeral events and to device messages pushed to app services. Contributed by Brad @ Beeper. ([\#13175](https://github.com/matrix-org/synapse/issues/13175))
+- Refactor receipts servlet logic to avoid duplicated code. ([\#13198](https://github.com/matrix-org/synapse/issues/13198))
+- Preparation for database schema simplifications: populate `state_key` and `rejection_reason` for existing rows in the `events` table. ([\#13215](https://github.com/matrix-org/synapse/issues/13215))
+- Remove unused database table `event_reference_hashes`. ([\#13218](https://github.com/matrix-org/synapse/issues/13218))
+- Further reduce queries used sending events when creating new rooms. Contributed by Nick @ Beeper (@fizzadar). ([\#13224](https://github.com/matrix-org/synapse/issues/13224))
+- Call the v2 identity service `/3pid/unbind` endpoint, rather than v1. Contributed by @Vetchu. ([\#13240](https://github.com/matrix-org/synapse/issues/13240))
+- Use an asynchronous cache wrapper for the get event cache. Contributed by Nick @ Beeper (@fizzadar). ([\#13242](https://github.com/matrix-org/synapse/issues/13242), [\#13308](https://github.com/matrix-org/synapse/issues/13308))
+- Optimise federation sender and appservice pusher event stream processing queries. Contributed by Nick @ Beeper (@fizzadar). ([\#13251](https://github.com/matrix-org/synapse/issues/13251))
+- Log the stack when waiting for an entire room to be un-partial stated. ([\#13257](https://github.com/matrix-org/synapse/issues/13257))
+- Fix spurious warning when fetching state after a missing prev event. ([\#13258](https://github.com/matrix-org/synapse/issues/13258))
+- Clean-up tests for notifications. ([\#13260](https://github.com/matrix-org/synapse/issues/13260))
+- Do not fail build if complement with workers fails. ([\#13266](https://github.com/matrix-org/synapse/issues/13266))
+- Don't pull out state in `compute_event_context` for unconflicted state. ([\#13267](https://github.com/matrix-org/synapse/issues/13267), [\#13274](https://github.com/matrix-org/synapse/issues/13274))
+- Reduce the rebuild time for the complement-synapse docker image. ([\#13279](https://github.com/matrix-org/synapse/issues/13279))
+- Don't pull out the full state when creating an event. ([\#13281](https://github.com/matrix-org/synapse/issues/13281), [\#13307](https://github.com/matrix-org/synapse/issues/13307))
+- Upgrade from Poetry 1.1.12 to 1.1.14, to fix bugs when locking packages. ([\#13285](https://github.com/matrix-org/synapse/issues/13285))
+- Make `DictionaryCache` expire full entries if they haven't been queried in a while, even if specific keys have been queried recently. ([\#13292](https://github.com/matrix-org/synapse/issues/13292))
+- Use `HTTPStatus` constants in place of literals in tests. ([\#13297](https://github.com/matrix-org/synapse/issues/13297))
+- Improve performance of query  `_get_subset_users_in_room_with_profiles`. ([\#13299](https://github.com/matrix-org/synapse/issues/13299))
+- Up batch size of `bulk_get_push_rules` and `_get_joined_profiles_from_event_ids`. ([\#13300](https://github.com/matrix-org/synapse/issues/13300))
+- Remove unnecessary `json.dumps` from tests. ([\#13303](https://github.com/matrix-org/synapse/issues/13303))
+- Reduce memory usage of sending dummy events. ([\#13310](https://github.com/matrix-org/synapse/issues/13310))
+- Prevent formatting changes of [#3679](https://github.com/matrix-org/synapse/pull/3679) from appearing in `git blame`. ([\#13311](https://github.com/matrix-org/synapse/issues/13311))
+- Change `get_users_in_room` and `get_rooms_for_user` caches to enable pruning of old entries. ([\#13313](https://github.com/matrix-org/synapse/issues/13313))
+- Validate federation destinations and log an error if a destination is invalid. ([\#13318](https://github.com/matrix-org/synapse/issues/13318))
+- Fix `FederationClient.get_pdu()` returning events from the cache as `outliers` instead of original events we saw over federation. ([\#13320](https://github.com/matrix-org/synapse/issues/13320))
+- Reduce memory usage of state caches. ([\#13323](https://github.com/matrix-org/synapse/issues/13323))
+- Reduce the amount of state we store in the `state_cache`. ([\#13324](https://github.com/matrix-org/synapse/issues/13324))
+- Add missing type hints to open tracing module. ([\#13328](https://github.com/matrix-org/synapse/issues/13328), [\#13345](https://github.com/matrix-org/synapse/issues/13345), [\#13362](https://github.com/matrix-org/synapse/issues/13362))
+- Remove old base slaved store and de-duplicate cache ID generators. Contributed by Nick @ Beeper (@fizzadar). ([\#13329](https://github.com/matrix-org/synapse/issues/13329), [\#13349](https://github.com/matrix-org/synapse/issues/13349))
+- When reporting metrics is enabled, use ~8x less data to describe DB transaction metrics. ([\#13342](https://github.com/matrix-org/synapse/issues/13342))
+- Faster room joins: skip soft fail checks while Synapse only has partial room state, since the current membership of event senders may not be accurately known. ([\#13354](https://github.com/matrix-org/synapse/issues/13354))
+
 
 Synapse 1.63.1 (2022-07-20)
 ===========================
diff --git a/changelog.d/12942.misc b/changelog.d/12942.misc
deleted file mode 100644
index acb2558d57..0000000000
--- a/changelog.d/12942.misc
+++ /dev/null
@@ -1 +0,0 @@
-Use lower isolation level when purging rooms to avoid serialization errors. Contributed by Nick @ Beeper.
diff --git a/changelog.d/12943.misc b/changelog.d/12943.misc
deleted file mode 100644
index f66bb3ec32..0000000000
--- a/changelog.d/12943.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove code which incorrectly attempted to reconcile state with remote servers when processing incoming events.
diff --git a/changelog.d/12967.removal b/changelog.d/12967.removal
deleted file mode 100644
index 0aafd6a4d9..0000000000
--- a/changelog.d/12967.removal
+++ /dev/null
@@ -1 +0,0 @@
-Drop tables used for groups/communities.
diff --git a/changelog.d/13038.feature b/changelog.d/13038.feature
deleted file mode 100644
index 1278f1b4e9..0000000000
--- a/changelog.d/13038.feature
+++ /dev/null
@@ -1 +0,0 @@
-Provide more info why we don't have any thumbnails to serve.
diff --git a/changelog.d/13094.misc b/changelog.d/13094.misc
deleted file mode 100644
index f1e55ae476..0000000000
--- a/changelog.d/13094.misc
+++ /dev/null
@@ -1 +0,0 @@
-Make the AS login method call `Auth.get_user_by_req` for checking the AS token.
diff --git a/changelog.d/13172.misc b/changelog.d/13172.misc
deleted file mode 100644
index 124a1b3662..0000000000
--- a/changelog.d/13172.misc
+++ /dev/null
@@ -1 +0,0 @@
-Always use a version of canonicaljson that supports the C implementation of frozendict.
diff --git a/changelog.d/13175.misc b/changelog.d/13175.misc
deleted file mode 100644
index f273b3d6ca..0000000000
--- a/changelog.d/13175.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add prometheus counters for ephemeral events and to device messages pushed to app services. Contributed by Brad @ Beeper.
diff --git a/changelog.d/13192.removal b/changelog.d/13192.removal
deleted file mode 100644
index a7dffd1c48..0000000000
--- a/changelog.d/13192.removal
+++ /dev/null
@@ -1 +0,0 @@
-Drop support for delegating email verification to an external server.
diff --git a/changelog.d/13198.misc b/changelog.d/13198.misc
deleted file mode 100644
index 5aef2432df..0000000000
--- a/changelog.d/13198.misc
+++ /dev/null
@@ -1 +0,0 @@
-Refactor receipts servlet logic to avoid duplicated code.
diff --git a/changelog.d/13205.feature b/changelog.d/13205.feature
deleted file mode 100644
index d89aa9aa75..0000000000
--- a/changelog.d/13205.feature
+++ /dev/null
@@ -1 +0,0 @@
-Allow pagination from remote event after discovering it from MSC3030 `/timestamp_to_event`.
diff --git a/changelog.d/13208.feature b/changelog.d/13208.feature
deleted file mode 100644
index b0c5f090ee..0000000000
--- a/changelog.d/13208.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add a `room_type` field in the responses for the list room and room details admin API. Contributed by @andrewdoh.
\ No newline at end of file
diff --git a/changelog.d/13215.misc b/changelog.d/13215.misc
deleted file mode 100644
index 3da35addb3..0000000000
--- a/changelog.d/13215.misc
+++ /dev/null
@@ -1 +0,0 @@
-Preparation for database schema simplifications: populate `state_key` and `rejection_reason` for existing rows in the `events` table.
diff --git a/changelog.d/13218.misc b/changelog.d/13218.misc
deleted file mode 100644
index b1c8e5c747..0000000000
--- a/changelog.d/13218.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove unused database table `event_reference_hashes`.
diff --git a/changelog.d/13220.feature b/changelog.d/13220.feature
deleted file mode 100644
index 9b0240fdc8..0000000000
--- a/changelog.d/13220.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add support for room version 10.
diff --git a/changelog.d/13224.misc b/changelog.d/13224.misc
deleted file mode 100644
index 41f8693b74..0000000000
--- a/changelog.d/13224.misc
+++ /dev/null
@@ -1 +0,0 @@
-Further reduce queries used sending events when creating new rooms. Contributed by Nick @ Beeper (@fizzadar).
diff --git a/changelog.d/13231.doc b/changelog.d/13231.doc
deleted file mode 100644
index e750f9da49..0000000000
--- a/changelog.d/13231.doc
+++ /dev/null
@@ -1 +0,0 @@
-Provide an example of using the Admin API. Contributed by @jejo86.
diff --git a/changelog.d/13233.doc b/changelog.d/13233.doc
deleted file mode 100644
index 3eaea7c5e3..0000000000
--- a/changelog.d/13233.doc
+++ /dev/null
@@ -1 +0,0 @@
-Move the documentation for how URL previews work to the URL preview module.
diff --git a/changelog.d/13239.removal b/changelog.d/13239.removal
deleted file mode 100644
index 8f6045176d..0000000000
--- a/changelog.d/13239.removal
+++ /dev/null
@@ -1 +0,0 @@
-Drop support for calling `/_matrix/client/v3/account/3pid/bind` without an `id_access_token`, which was not permitted by the spec. Contributed by @Vetchu.
\ No newline at end of file
diff --git a/changelog.d/13240.misc b/changelog.d/13240.misc
deleted file mode 100644
index 0567e47d64..0000000000
--- a/changelog.d/13240.misc
+++ /dev/null
@@ -1 +0,0 @@
-Call the v2 identity service `/3pid/unbind` endpoint, rather than v1.
\ No newline at end of file
diff --git a/changelog.d/13242.misc b/changelog.d/13242.misc
deleted file mode 100644
index 7f8ec0815f..0000000000
--- a/changelog.d/13242.misc
+++ /dev/null
@@ -1 +0,0 @@
-Use an asynchronous cache wrapper for the get event cache. Contributed by Nick @ Beeper (@fizzadar).
diff --git a/changelog.d/13251.misc b/changelog.d/13251.misc
deleted file mode 100644
index 526369e403..0000000000
--- a/changelog.d/13251.misc
+++ /dev/null
@@ -1 +0,0 @@
-Optimise federation sender and appservice pusher event stream processing queries. Contributed by Nick @ Beeper (@fizzadar).
diff --git a/changelog.d/13253.misc b/changelog.d/13253.misc
deleted file mode 100644
index cba6b9ee0f..0000000000
--- a/changelog.d/13253.misc
+++ /dev/null
@@ -1 +0,0 @@
-Preparatory work for a per-room rate limiter on joins.
diff --git a/changelog.d/13254.misc b/changelog.d/13254.misc
deleted file mode 100644
index cba6b9ee0f..0000000000
--- a/changelog.d/13254.misc
+++ /dev/null
@@ -1 +0,0 @@
-Preparatory work for a per-room rate limiter on joins.
diff --git a/changelog.d/13255.misc b/changelog.d/13255.misc
deleted file mode 100644
index cba6b9ee0f..0000000000
--- a/changelog.d/13255.misc
+++ /dev/null
@@ -1 +0,0 @@
-Preparatory work for a per-room rate limiter on joins.
diff --git a/changelog.d/13257.misc b/changelog.d/13257.misc
deleted file mode 100644
index 5fc1388520..0000000000
--- a/changelog.d/13257.misc
+++ /dev/null
@@ -1 +0,0 @@
-Log the stack when waiting for an entire room to be un-partial stated.
diff --git a/changelog.d/13258.misc b/changelog.d/13258.misc
deleted file mode 100644
index a187c46aa6..0000000000
--- a/changelog.d/13258.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix spurious warning when fetching state after a missing prev event.
diff --git a/changelog.d/13260.misc b/changelog.d/13260.misc
deleted file mode 100644
index b55ff32c76..0000000000
--- a/changelog.d/13260.misc
+++ /dev/null
@@ -1 +0,0 @@
-Clean-up tests for notifications.
diff --git a/changelog.d/13261.doc b/changelog.d/13261.doc
deleted file mode 100644
index 3eaea7c5e3..0000000000
--- a/changelog.d/13261.doc
+++ /dev/null
@@ -1 +0,0 @@
-Move the documentation for how URL previews work to the URL preview module.
diff --git a/changelog.d/13263.bugfix b/changelog.d/13263.bugfix
deleted file mode 100644
index 91e1d1e7eb..0000000000
--- a/changelog.d/13263.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug introduced in Synapse 1.15.0 where adding a user through the Synapse Admin API with a phone number would fail if the "enable_email_notifs" and "email_notifs_for_new_users" options were enabled. Contributed by @thomasweston12.
diff --git a/changelog.d/13266.misc b/changelog.d/13266.misc
deleted file mode 100644
index d583acb81b..0000000000
--- a/changelog.d/13266.misc
+++ /dev/null
@@ -1 +0,0 @@
-Do not fail build if complement with workers fails.
diff --git a/changelog.d/13267.misc b/changelog.d/13267.misc
deleted file mode 100644
index a334414320..0000000000
--- a/changelog.d/13267.misc
+++ /dev/null
@@ -1 +0,0 @@
-Don't pull out state in `compute_event_context` for unconflicted state.
diff --git a/changelog.d/13270.bugfix b/changelog.d/13270.bugfix
deleted file mode 100644
index d023b25eea..0000000000
--- a/changelog.d/13270.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug introduced in Synapse 1.40 where a user invited to a restricted room would be briefly unable to join.
diff --git a/changelog.d/13271.doc b/changelog.d/13271.doc
deleted file mode 100644
index b50e60d029..0000000000
--- a/changelog.d/13271.doc
+++ /dev/null
@@ -1 +0,0 @@
-Add another `contrib` script to help set up worker processes. Contributed by @villepeh.
diff --git a/changelog.d/13274.misc b/changelog.d/13274.misc
deleted file mode 100644
index a334414320..0000000000
--- a/changelog.d/13274.misc
+++ /dev/null
@@ -1 +0,0 @@
-Don't pull out state in `compute_event_context` for unconflicted state.
diff --git a/changelog.d/13276.feature b/changelog.d/13276.feature
deleted file mode 100644
index 068d158ed5..0000000000
--- a/changelog.d/13276.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add per-room rate limiting for room joins. For each room, Synapse now monitors the rate of join events in that room, and throttle additional joins if that rate grows too large.
diff --git a/changelog.d/13278.bugfix b/changelog.d/13278.bugfix
deleted file mode 100644
index 49e9377c79..0000000000
--- a/changelog.d/13278.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix long-standing bug where in rare instances Synapse could store the incorrect state for a room after a state resolution.
diff --git a/changelog.d/13279.misc b/changelog.d/13279.misc
deleted file mode 100644
index a083d2af2a..0000000000
--- a/changelog.d/13279.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reduce the rebuild time for the complement-synapse docker image.
diff --git a/changelog.d/13281.misc b/changelog.d/13281.misc
deleted file mode 100644
index dea51d1362..0000000000
--- a/changelog.d/13281.misc
+++ /dev/null
@@ -1 +0,0 @@
-Don't pull out the full state when creating an event.
diff --git a/changelog.d/13284.misc b/changelog.d/13284.misc
deleted file mode 100644
index fa9743a10e..0000000000
--- a/changelog.d/13284.misc
+++ /dev/null
@@ -1 +0,0 @@
-Update locked version of `frozendict` to 2.3.2, which has a fix for a memory leak.
diff --git a/changelog.d/13285.misc b/changelog.d/13285.misc
deleted file mode 100644
index b7bcbadb5b..0000000000
--- a/changelog.d/13285.misc
+++ /dev/null
@@ -1 +0,0 @@
-Upgrade from Poetry 1.1.14 to 1.1.12, to fix bugs when locking packages.
diff --git a/changelog.d/13292.misc b/changelog.d/13292.misc
deleted file mode 100644
index 67fec55330..0000000000
--- a/changelog.d/13292.misc
+++ /dev/null
@@ -1 +0,0 @@
-Make `DictionaryCache` expire full entries if they haven't been queried in a while, even if specific keys have been queried recently.
diff --git a/changelog.d/13296.bugfix b/changelog.d/13296.bugfix
deleted file mode 100644
index ff0eb2b4a1..0000000000
--- a/changelog.d/13296.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug introduced in v1.18.0 where the `synapse_pushers` metric would overcount pushers when they are replaced.
diff --git a/changelog.d/13297.misc b/changelog.d/13297.misc
deleted file mode 100644
index 545a62369f..0000000000
--- a/changelog.d/13297.misc
+++ /dev/null
@@ -1 +0,0 @@
-Use `HTTPStatus` constants in place of literals in tests.
\ No newline at end of file
diff --git a/changelog.d/13299.misc b/changelog.d/13299.misc
deleted file mode 100644
index a9d5566873..0000000000
--- a/changelog.d/13299.misc
+++ /dev/null
@@ -1 +0,0 @@
-Improve performance of query  `_get_subset_users_in_room_with_profiles`.
diff --git a/changelog.d/13300.misc b/changelog.d/13300.misc
deleted file mode 100644
index ee58add3c4..0000000000
--- a/changelog.d/13300.misc
+++ /dev/null
@@ -1 +0,0 @@
-Up batch size of `bulk_get_push_rules` and `_get_joined_profiles_from_event_ids`.
diff --git a/changelog.d/13303.misc b/changelog.d/13303.misc
deleted file mode 100644
index 03f64ab171..0000000000
--- a/changelog.d/13303.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove unnecessary `json.dumps` from tests.
\ No newline at end of file
diff --git a/changelog.d/13307.misc b/changelog.d/13307.misc
deleted file mode 100644
index 45b628ce13..0000000000
--- a/changelog.d/13307.misc
+++ /dev/null
@@ -1 +0,0 @@
-Don't pull out the full state when creating an event.
\ No newline at end of file
diff --git a/changelog.d/13308.misc b/changelog.d/13308.misc
deleted file mode 100644
index 7f8ec0815f..0000000000
--- a/changelog.d/13308.misc
+++ /dev/null
@@ -1 +0,0 @@
-Use an asynchronous cache wrapper for the get event cache. Contributed by Nick @ Beeper (@fizzadar).
diff --git a/changelog.d/13310.misc b/changelog.d/13310.misc
deleted file mode 100644
index eaf570e058..0000000000
--- a/changelog.d/13310.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reduce memory usage of sending dummy events.
diff --git a/changelog.d/13311.misc b/changelog.d/13311.misc
deleted file mode 100644
index 4be81c675c..0000000000
--- a/changelog.d/13311.misc
+++ /dev/null
@@ -1 +0,0 @@
-Prevent formatting changes of [#3679](https://github.com/matrix-org/synapse/pull/3679) from appearing in `git blame`.
\ No newline at end of file
diff --git a/changelog.d/13313.misc b/changelog.d/13313.misc
deleted file mode 100644
index 0f3c1f0afd..0000000000
--- a/changelog.d/13313.misc
+++ /dev/null
@@ -1 +0,0 @@
-Change `get_users_in_room` and `get_rooms_for_user` caches to enable pruning of old entries.
diff --git a/changelog.d/13314.doc b/changelog.d/13314.doc
deleted file mode 100644
index 75c71ef27a..0000000000
--- a/changelog.d/13314.doc
+++ /dev/null
@@ -1 +0,0 @@
-Add notes when config options where changed. Contributed by @behrmann.
diff --git a/changelog.d/13317.feature b/changelog.d/13317.feature
deleted file mode 100644
index e0ebd2b51f..0000000000
--- a/changelog.d/13317.feature
+++ /dev/null
@@ -1 +0,0 @@
-Support Implicit TLS for sending emails, enabled by the new option `force_tls`. Contributed by Jan Schär.
diff --git a/changelog.d/13318.misc b/changelog.d/13318.misc
deleted file mode 100644
index f5cd26b862..0000000000
--- a/changelog.d/13318.misc
+++ /dev/null
@@ -1 +0,0 @@
-Validate federation destinations and log an error if a destination is invalid.
diff --git a/changelog.d/13320.misc b/changelog.d/13320.misc
deleted file mode 100644
index d33cf3a25a..0000000000
--- a/changelog.d/13320.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix `FederationClient.get_pdu()` returning events from the cache as `outliers` instead of original events we saw over federation.
diff --git a/changelog.d/13323.misc b/changelog.d/13323.misc
deleted file mode 100644
index 3caa94a2f6..0000000000
--- a/changelog.d/13323.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reduce memory usage of state caches.
diff --git a/changelog.d/13324.misc b/changelog.d/13324.misc
deleted file mode 100644
index 30670cf56c..0000000000
--- a/changelog.d/13324.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reduce the amount of state we store in the `state_cache`.
diff --git a/changelog.d/13326.removal b/changelog.d/13326.removal
deleted file mode 100644
index 8112286671..0000000000
--- a/changelog.d/13326.removal
+++ /dev/null
@@ -1 +0,0 @@
-Stop builindg `.deb` packages for Ubuntu 21.10 (Impish Indri), which has reached end of life.
diff --git a/changelog.d/13328.misc b/changelog.d/13328.misc
deleted file mode 100644
index c80578ce95..0000000000
--- a/changelog.d/13328.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add missing type hints to open tracing module.
diff --git a/changelog.d/13329.misc b/changelog.d/13329.misc
deleted file mode 100644
index 4df9a9f6d7..0000000000
--- a/changelog.d/13329.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove old base slaved store and de-duplicate cache ID generators. Contributed by Nick @ Beeper (@fizzadar).
diff --git a/changelog.d/13333.doc b/changelog.d/13333.doc
deleted file mode 100644
index 57cbdf05c8..0000000000
--- a/changelog.d/13333.doc
+++ /dev/null
@@ -1 +0,0 @@
-Document the new `rc_invites.per_issuer` throttling option added in Synapse 1.63.
\ No newline at end of file
diff --git a/changelog.d/13338.doc b/changelog.d/13338.doc
deleted file mode 100644
index 7acf6d3f34..0000000000
--- a/changelog.d/13338.doc
+++ /dev/null
@@ -1 +0,0 @@
-Mention that BuildKit is needed when building Docker images for tests.
diff --git a/changelog.d/13342.misc b/changelog.d/13342.misc
deleted file mode 100644
index ce9c816b9c..0000000000
--- a/changelog.d/13342.misc
+++ /dev/null
@@ -1 +0,0 @@
-When reporting metrics is enabled, use ~8x less data to describe DB transaction metrics.
diff --git a/changelog.d/13344.doc b/changelog.d/13344.doc
deleted file mode 100644
index fca187df92..0000000000
--- a/changelog.d/13344.doc
+++ /dev/null
@@ -1 +0,0 @@
-Improve Caddy reverse proxy documentation.
diff --git a/changelog.d/13345.misc b/changelog.d/13345.misc
deleted file mode 100644
index c80578ce95..0000000000
--- a/changelog.d/13345.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add missing type hints to open tracing module.
diff --git a/changelog.d/13349.misc b/changelog.d/13349.misc
deleted file mode 100644
index 4df9a9f6d7..0000000000
--- a/changelog.d/13349.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove old base slaved store and de-duplicate cache ID generators. Contributed by Nick @ Beeper (@fizzadar).
diff --git a/changelog.d/13350.bugfix b/changelog.d/13350.bugfix
deleted file mode 100644
index 46c496a6a0..0000000000
--- a/changelog.d/13350.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Disable autocorrection and autocapitalisation on the username text field shown during registration when using SSO.
diff --git a/changelog.d/13352.bugfix b/changelog.d/13352.bugfix
deleted file mode 100644
index 8128714299..0000000000
--- a/changelog.d/13352.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Update locked version of `frozendict` to 2.3.3, which has fixes for memory leaks affecting `/sync`.
diff --git a/changelog.d/13354.misc b/changelog.d/13354.misc
deleted file mode 100644
index e08ee7866a..0000000000
--- a/changelog.d/13354.misc
+++ /dev/null
@@ -1 +0,0 @@
-Faster room joins: skip soft fail checks while Synapse only has partial room state, since the current membership of event senders may not be accurately known.
diff --git a/changelog.d/13362.misc b/changelog.d/13362.misc
deleted file mode 100644
index c80578ce95..0000000000
--- a/changelog.d/13362.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add missing type hints to open tracing module.
diff --git a/debian/changelog b/debian/changelog
index 9417f8714f..38030a5e19 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.64.0~rc1) stable; urgency=medium
+
+  * New Synapse release 1.64.0rc1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 26 Jul 2022 12:11:49 +0100
+
 matrix-synapse-py3 (1.63.1) stable; urgency=medium
 
   * New Synapse release 1.63.1.
diff --git a/pyproject.toml b/pyproject.toml
index 4da1331c93..c707737590 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ skip_gitignore = true
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.63.1"
+version = "1.64.0rc1"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "Apache-2.0"