diff --git a/CHANGES.md b/CHANGES.md
index 8bd782508..dc7d24581 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,89 @@
+Synapse 1.23.0rc1 (2020-11-13)
+==============================
+
+Features
+--------
+
+- Add a push rule that highlights when a jitsi conference is created in a room. ([\#8286](https://github.com/matrix-org/synapse/issues/8286))
+- Add an admin api to delete a single file or files were not used for a defined time from server. Contributed by @dklimpel. ([\#8519](https://github.com/matrix-org/synapse/issues/8519))
+- Split admin API for reported events (`GET /_synapse/admin/v1/event_reports`) into detail and list endpoints. This is a breaking change to #8217 which was introduced in Synapse v1.21.0. Those who already use this API should check their scripts. Contributed by @dklimpel. ([\#8539](https://github.com/matrix-org/synapse/issues/8539))
+- Support generating structured logs via the standard logging configuration. ([\#8607](https://github.com/matrix-org/synapse/issues/8607), [\#8685](https://github.com/matrix-org/synapse/issues/8685))
+- Add an admin APIs to allow server admins to list users' pushers. Contributed by @dklimpel. ([\#8610](https://github.com/matrix-org/synapse/issues/8610), [\#8689](https://github.com/matrix-org/synapse/issues/8689))
+- Add an admin API `GET /_synapse/admin/v1/users/<user_id>/media` to get information about uploaded media. Contributed by @dklimpel. ([\#8647](https://github.com/matrix-org/synapse/issues/8647))
+- Add an admin API for local user media statistics. Contributed by @dklimpel. ([\#8700](https://github.com/matrix-org/synapse/issues/8700))
+- Add `displayname` to Shared-Secret Registration for admins. ([\#8722](https://github.com/matrix-org/synapse/issues/8722))
+
+
+Bugfixes
+--------
+
+- Fix fetching of E2E cross signing keys over federation when only one of the master key and device signing key is cached already. ([\#8455](https://github.com/matrix-org/synapse/issues/8455))
+- Fix a bug where Synapse would blindly forward bad responses from federation to clients when retrieving profile information. ([\#8580](https://github.com/matrix-org/synapse/issues/8580))
+- Fix a bug where the account validity endpoint would silently fail if the user ID did not have an expiration time. It now returns a 400 error. ([\#8620](https://github.com/matrix-org/synapse/issues/8620))
+- Fix email notifications for invites without local state. ([\#8627](https://github.com/matrix-org/synapse/issues/8627))
+- Fix handling of invalid group IDs to return a 400 rather than log an exception and return a 500. ([\#8628](https://github.com/matrix-org/synapse/issues/8628))
+- Fix handling of User-Agent headers that are invalid UTF-8, which caused user agents of users to not get correctly recorded. ([\#8632](https://github.com/matrix-org/synapse/issues/8632))
+- Fix a bug in the `joined_rooms` admin API if the user has never joined any rooms. The bug was introduced, along with the API, in v1.21.0. ([\#8643](https://github.com/matrix-org/synapse/issues/8643))
+- Fix exception during handling multiple concurrent requests for remote media when using multiple media repositories. ([\#8682](https://github.com/matrix-org/synapse/issues/8682))
+- Fix bug where Synapse would not recover after losing connection to the database. ([\#8726](https://github.com/matrix-org/synapse/issues/8726))
+- Fix bug where the `/_synapse/admin/v1/send_server_notice` API could send notices to non-notice rooms. ([\#8728](https://github.com/matrix-org/synapse/issues/8728))
+- Fix port script fails when DB has no backfilled events. Broke in v1.21.0. ([\#8729](https://github.com/matrix-org/synapse/issues/8729))
+- Fix port script to correctly handle foreign key constraints. Broke in v1.21.0. ([\#8730](https://github.com/matrix-org/synapse/issues/8730))
+- Fix port script so that it can be run again after a failure. Broke in v1.21.0. ([\#8755](https://github.com/matrix-org/synapse/issues/8755))
+
+
+Improved Documentation
+----------------------
+
+- Instructions for Azure AD in the OpenID Connect documentation. Contributed by peterk. ([\#8582](https://github.com/matrix-org/synapse/issues/8582))
+- Improve the sample configuration for single sign-on providers. ([\#8635](https://github.com/matrix-org/synapse/issues/8635))
+- Fix the filepath of Dex's example config and the link to Dex's Getting Started guide in the OpenID Connect docs. ([\#8657](https://github.com/matrix-org/synapse/issues/8657))
+- Note support for Python 3.9. ([\#8665](https://github.com/matrix-org/synapse/issues/8665))
+- Minor updates to docs on running tests. ([\#8666](https://github.com/matrix-org/synapse/issues/8666))
+- Interlink prometheus/grafana documentation. ([\#8667](https://github.com/matrix-org/synapse/issues/8667))
+- Notes on SSO logins and media_repository worker. ([\#8701](https://github.com/matrix-org/synapse/issues/8701))
+- Document experimental support for running multiple event persisters. ([\#8706](https://github.com/matrix-org/synapse/issues/8706))
+- Add information regarding the various sources of, and expected contributions to, Synapse's documentation to `CONTRIBUTING.md`. ([\#8714](https://github.com/matrix-org/synapse/issues/8714))
+- Migrate documentation `docs/admin_api/event_reports` to markdown. ([\#8742](https://github.com/matrix-org/synapse/issues/8742))
+- Add some helpful hints to the README for new Synapse developers. Contributed by @chagai95. ([\#8746](https://github.com/matrix-org/synapse/issues/8746))
+
+
+Internal Changes
+----------------
+
+- Optimise `/createRoom` with multiple invited users. ([\#8559](https://github.com/matrix-org/synapse/issues/8559))
+- Implement and use an @lru_cache decorator. ([\#8595](https://github.com/matrix-org/synapse/issues/8595))
+- Don't instansiate Requester directly. ([\#8614](https://github.com/matrix-org/synapse/issues/8614))
+- Type hints for `RegistrationStore`. ([\#8615](https://github.com/matrix-org/synapse/issues/8615))
+- Change schema to support access tokens belonging to one user but granting access to another. ([\#8616](https://github.com/matrix-org/synapse/issues/8616))
+- Remove unused OPTIONS handlers. ([\#8621](https://github.com/matrix-org/synapse/issues/8621))
+- Run `mypy` as part of the lint.sh script. ([\#8633](https://github.com/matrix-org/synapse/issues/8633))
+- Correct Synapse's PyPI package name in the OpenID Connect installation instructions. ([\#8634](https://github.com/matrix-org/synapse/issues/8634))
+- Catch exceptions during initialization of `password_providers`. Contributed by Nicolai Søborg. ([\#8636](https://github.com/matrix-org/synapse/issues/8636))
+- Fix typos and spelling errors in the code. ([\#8639](https://github.com/matrix-org/synapse/issues/8639))
+- Reduce number of OpenTracing spans started. ([\#8640](https://github.com/matrix-org/synapse/issues/8640), [\#8668](https://github.com/matrix-org/synapse/issues/8668), [\#8670](https://github.com/matrix-org/synapse/issues/8670))
+- Add field `total` to device list in admin API. ([\#8644](https://github.com/matrix-org/synapse/issues/8644))
+- Add more type hints to the application services code. ([\#8655](https://github.com/matrix-org/synapse/issues/8655), [\#8693](https://github.com/matrix-org/synapse/issues/8693))
+- Tell Black to format code for Python 3.5. ([\#8664](https://github.com/matrix-org/synapse/issues/8664))
+- Don't pull event from DB when handling replication traffic. ([\#8669](https://github.com/matrix-org/synapse/issues/8669))
+- Abstract some invite-related code in preparation for landing knocking. ([\#8671](https://github.com/matrix-org/synapse/issues/8671), [\#8688](https://github.com/matrix-org/synapse/issues/8688))
+- Clarify representation of events in logfiles. ([\#8679](https://github.com/matrix-org/synapse/issues/8679))
+- Don't require `hiredis` package to be installed to run unit tests. ([\#8680](https://github.com/matrix-org/synapse/issues/8680))
+- Fix typing info on cache call signature to accept `on_invalidate`. ([\#8684](https://github.com/matrix-org/synapse/issues/8684))
+- Fail tests if they do not await coroutines. ([\#8690](https://github.com/matrix-org/synapse/issues/8690))
+- Improve start time by adding an index to `e2e_cross_signing_keys.stream_id`. ([\#8694](https://github.com/matrix-org/synapse/issues/8694))
+- Re-organize the structured logging code to separate the TCP transport handling from the JSON formatting. ([\#8697](https://github.com/matrix-org/synapse/issues/8697))
+- Use Python 3.8 in Docker images by default. ([\#8698](https://github.com/matrix-org/synapse/issues/8698))
+- Remove the "draft" status of the Room Details Admin API. ([\#8702](https://github.com/matrix-org/synapse/issues/8702))
+- Improve the error returned when a non-string displayname or avatar_url is used when updating a user's profile. ([\#8705](https://github.com/matrix-org/synapse/issues/8705))
+- Block attempts by clients to send server ACLs, or redactions of server ACLs, that would result in the local server being blocked from the room. ([\#8708](https://github.com/matrix-org/synapse/issues/8708))
+- Add metrics the allow the local sysadmin to track 3PID `/requestToken` requests. ([\#8712](https://github.com/matrix-org/synapse/issues/8712))
+- Consolidate duplicated lists of purged tables that are checked in tests. ([\#8713](https://github.com/matrix-org/synapse/issues/8713))
+- Add some `mdui:UIInfo` element examples for `saml2_config` in the homeserver config. ([\#8718](https://github.com/matrix-org/synapse/issues/8718))
+- Improve the error message returned when a remote server incorrectly sets the `Content-Type` header in response to a JSON request. ([\#8719](https://github.com/matrix-org/synapse/issues/8719))
+- Speed up repeated state resolutions on the same room by caching event ID to auth event ID lookups. ([\#8752](https://github.com/matrix-org/synapse/issues/8752))
+
+
 Synapse 1.22.1 (2020-10-30)
 ===========================
 
diff --git a/changelog.d/8286.feature b/changelog.d/8286.feature
deleted file mode 100644
index 2c371419a..000000000
--- a/changelog.d/8286.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add a push rule that highlights when a jitsi conference is created in a room.
diff --git a/changelog.d/8455.bugfix b/changelog.d/8455.bugfix
deleted file mode 100644
index 561e73f5e..000000000
--- a/changelog.d/8455.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix fetching of E2E cross signing keys over federation when only one of the master key and device signing key is cached already.
diff --git a/changelog.d/8519.feature b/changelog.d/8519.feature
deleted file mode 100644
index e2ab54868..000000000
--- a/changelog.d/8519.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add an admin api to delete a single file or files were not used for a defined time from server. Contributed by @dklimpel.
\ No newline at end of file
diff --git a/changelog.d/8539.feature b/changelog.d/8539.feature
deleted file mode 100644
index 15ce02fb8..000000000
--- a/changelog.d/8539.feature
+++ /dev/null
@@ -1 +0,0 @@
-Split admin API for reported events (`GET /_synapse/admin/v1/event_reports`) into detail and list endpoints. This is a breaking change to #8217 which was introduced in Synapse v1.21.0. Those who already use this API should check their scripts. Contributed by @dklimpel.
\ No newline at end of file
diff --git a/changelog.d/8559.misc b/changelog.d/8559.misc
deleted file mode 100644
index d7bd00964..000000000
--- a/changelog.d/8559.misc
+++ /dev/null
@@ -1 +0,0 @@
-Optimise `/createRoom` with multiple invited users.
diff --git a/changelog.d/8580.bugfix b/changelog.d/8580.bugfix
deleted file mode 100644
index 31734fd97..000000000
--- a/changelog.d/8580.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug where Synapse would blindly forward bad responses from federation to clients when retrieving profile information.
diff --git a/changelog.d/8582.doc b/changelog.d/8582.doc
deleted file mode 100644
index 041f16871..000000000
--- a/changelog.d/8582.doc
+++ /dev/null
@@ -1 +0,0 @@
-Instructions for Azure AD in the OpenID Connect documentation. Contributed by peterk.
diff --git a/changelog.d/8595.misc b/changelog.d/8595.misc
deleted file mode 100644
index 24fab65cd..000000000
--- a/changelog.d/8595.misc
+++ /dev/null
@@ -1 +0,0 @@
-Implement and use an @lru_cache decorator.
diff --git a/changelog.d/8607.feature b/changelog.d/8607.feature
deleted file mode 100644
index fef1eccb9..000000000
--- a/changelog.d/8607.feature
+++ /dev/null
@@ -1 +0,0 @@
-Support generating structured logs via the standard logging configuration.
diff --git a/changelog.d/8610.feature b/changelog.d/8610.feature
deleted file mode 100644
index ed8d92696..000000000
--- a/changelog.d/8610.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add an admin APIs to allow server admins to list users' pushers. Contributed by @dklimpel.
\ No newline at end of file
diff --git a/changelog.d/8614.misc b/changelog.d/8614.misc
deleted file mode 100644
index 1bf9ea08f..000000000
--- a/changelog.d/8614.misc
+++ /dev/null
@@ -1 +0,0 @@
-Don't instansiate Requester directly.
diff --git a/changelog.d/8615.misc b/changelog.d/8615.misc
deleted file mode 100644
index 79fa7b7ff..000000000
--- a/changelog.d/8615.misc
+++ /dev/null
@@ -1 +0,0 @@
-Type hints for `RegistrationStore`.
diff --git a/changelog.d/8616.misc b/changelog.d/8616.misc
deleted file mode 100644
index 385b14063..000000000
--- a/changelog.d/8616.misc
+++ /dev/null
@@ -1 +0,0 @@
-Change schema to support access tokens belonging to one user but granting access to another.
diff --git a/changelog.d/8620.bugfix b/changelog.d/8620.bugfix
deleted file mode 100644
index c1078a3fb..000000000
--- a/changelog.d/8620.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug where the account validity endpoint would silently fail if the user ID did not have an expiration time. It now returns a 400 error.
diff --git a/changelog.d/8621.misc b/changelog.d/8621.misc
deleted file mode 100644
index 5720b665f..000000000
--- a/changelog.d/8621.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove unused OPTIONS handlers.
diff --git a/changelog.d/8627.bugfix b/changelog.d/8627.bugfix
deleted file mode 100644
index 143cf95f9..000000000
--- a/changelog.d/8627.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix email notifications for invites without local state.
diff --git a/changelog.d/8628.bugfix b/changelog.d/8628.bugfix
deleted file mode 100644
index 1316136ca..000000000
--- a/changelog.d/8628.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix handling of invalid group IDs to return a 400 rather than log an exception and return a 500.
diff --git a/changelog.d/8632.bugfix b/changelog.d/8632.bugfix
deleted file mode 100644
index 7d834aa2e..000000000
--- a/changelog.d/8632.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix handling of User-Agent headers that are invalid UTF-8, which caused user agents of users to not get correctly recorded.
diff --git a/changelog.d/8633.misc b/changelog.d/8633.misc
deleted file mode 100644
index 8e1d006b3..000000000
--- a/changelog.d/8633.misc
+++ /dev/null
@@ -1 +0,0 @@
-Run `mypy` as part of the lint.sh script.
diff --git a/changelog.d/8634.misc b/changelog.d/8634.misc
deleted file mode 100644
index c4f74ba7c..000000000
--- a/changelog.d/8634.misc
+++ /dev/null
@@ -1 +0,0 @@
-Correct Synapse's PyPI package name in the OpenID Connect installation instructions.
\ No newline at end of file
diff --git a/changelog.d/8635.doc b/changelog.d/8635.doc
deleted file mode 100644
index 00fb1e61a..000000000
--- a/changelog.d/8635.doc
+++ /dev/null
@@ -1 +0,0 @@
-Improve the sample configuration for single sign-on providers.
diff --git a/changelog.d/8636.misc b/changelog.d/8636.misc
deleted file mode 100644
index df4dca42f..000000000
--- a/changelog.d/8636.misc
+++ /dev/null
@@ -1 +0,0 @@
-Catch exceptions during initialization of `password_providers`. Contributed by Nicolai Søborg.
diff --git a/changelog.d/8639.misc b/changelog.d/8639.misc
deleted file mode 100644
index 20a213df3..000000000
--- a/changelog.d/8639.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix typos and spelling errors in the code.
diff --git a/changelog.d/8640.misc b/changelog.d/8640.misc
deleted file mode 100644
index cf6023f78..000000000
--- a/changelog.d/8640.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reduce number of OpenTracing spans started.
diff --git a/changelog.d/8643.bugfix b/changelog.d/8643.bugfix
deleted file mode 100644
index fcda1ca87..000000000
--- a/changelog.d/8643.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix a bug in the `joined_rooms` admin API if the user has never joined any rooms. The bug was introduced, along with the API, in v1.21.0.
diff --git a/changelog.d/8644.misc b/changelog.d/8644.misc
deleted file mode 100644
index 87f2b7292..000000000
--- a/changelog.d/8644.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add field `total` to device list in admin API.
\ No newline at end of file
diff --git a/changelog.d/8647.feature b/changelog.d/8647.feature
deleted file mode 100644
index 79e98f6e9..000000000
--- a/changelog.d/8647.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add an admin API `GET /_synapse/admin/v1/users/<user_id>/media` to get information about uploaded media. Contributed by @dklimpel.
\ No newline at end of file
diff --git a/changelog.d/8655.misc b/changelog.d/8655.misc
deleted file mode 100644
index b588bdd3e..000000000
--- a/changelog.d/8655.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add more type hints to the application services code.
diff --git a/changelog.d/8657.doc b/changelog.d/8657.doc
deleted file mode 100644
index 3dcbb221a..000000000
--- a/changelog.d/8657.doc
+++ /dev/null
@@ -1 +0,0 @@
-Fix the filepath of Dex's example config and the link to Dex's Getting Started guide in the OpenID Connect docs.
diff --git a/changelog.d/8664.misc b/changelog.d/8664.misc
deleted file mode 100644
index 278cf53ad..000000000
--- a/changelog.d/8664.misc
+++ /dev/null
@@ -1 +0,0 @@
-Tell Black to format code for Python 3.5.
diff --git a/changelog.d/8665.doc b/changelog.d/8665.doc
deleted file mode 100644
index 3b75307dc..000000000
--- a/changelog.d/8665.doc
+++ /dev/null
@@ -1 +0,0 @@
-Note support for Python 3.9.
diff --git a/changelog.d/8666.doc b/changelog.d/8666.doc
deleted file mode 100644
index dee86b4a2..000000000
--- a/changelog.d/8666.doc
+++ /dev/null
@@ -1 +0,0 @@
-Minor updates to docs on running tests.
diff --git a/changelog.d/8667.doc b/changelog.d/8667.doc
deleted file mode 100644
index 422d697da..000000000
--- a/changelog.d/8667.doc
+++ /dev/null
@@ -1 +0,0 @@
-Interlink prometheus/grafana documentation.
diff --git a/changelog.d/8668.misc b/changelog.d/8668.misc
deleted file mode 100644
index cf6023f78..000000000
--- a/changelog.d/8668.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reduce number of OpenTracing spans started.
diff --git a/changelog.d/8669.misc b/changelog.d/8669.misc
deleted file mode 100644
index 5228105cd..000000000
--- a/changelog.d/8669.misc
+++ /dev/null
@@ -1 +0,0 @@
-Don't pull event from DB when handling replication traffic.
diff --git a/changelog.d/8670.misc b/changelog.d/8670.misc
deleted file mode 100644
index cf6023f78..000000000
--- a/changelog.d/8670.misc
+++ /dev/null
@@ -1 +0,0 @@
-Reduce number of OpenTracing spans started.
diff --git a/changelog.d/8671.misc b/changelog.d/8671.misc
deleted file mode 100644
index bef8dc425..000000000
--- a/changelog.d/8671.misc
+++ /dev/null
@@ -1 +0,0 @@
-Abstract some invite-related code in preparation for landing knocking.
\ No newline at end of file
diff --git a/changelog.d/8679.misc b/changelog.d/8679.misc
deleted file mode 100644
index 662eced4c..000000000
--- a/changelog.d/8679.misc
+++ /dev/null
@@ -1 +0,0 @@
-Clarify representation of events in logfiles.
diff --git a/changelog.d/8680.misc b/changelog.d/8680.misc
deleted file mode 100644
index 2ca297546..000000000
--- a/changelog.d/8680.misc
+++ /dev/null
@@ -1 +0,0 @@
-Don't require `hiredis` package to be installed to run unit tests.
diff --git a/changelog.d/8682.bugfix b/changelog.d/8682.bugfix
deleted file mode 100644
index e61276aa0..000000000
--- a/changelog.d/8682.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix exception during handling multiple concurrent requests for remote media when using multiple media repositories.
diff --git a/changelog.d/8684.misc b/changelog.d/8684.misc
deleted file mode 100644
index 1d23d4292..000000000
--- a/changelog.d/8684.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix typing info on cache call signature to accept `on_invalidate`.
diff --git a/changelog.d/8685.feature b/changelog.d/8685.feature
deleted file mode 100644
index fef1eccb9..000000000
--- a/changelog.d/8685.feature
+++ /dev/null
@@ -1 +0,0 @@
-Support generating structured logs via the standard logging configuration.
diff --git a/changelog.d/8688.misc b/changelog.d/8688.misc
deleted file mode 100644
index bef8dc425..000000000
--- a/changelog.d/8688.misc
+++ /dev/null
@@ -1 +0,0 @@
-Abstract some invite-related code in preparation for landing knocking.
\ No newline at end of file
diff --git a/changelog.d/8689.feature b/changelog.d/8689.feature
deleted file mode 100644
index ed8d92696..000000000
--- a/changelog.d/8689.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add an admin APIs to allow server admins to list users' pushers. Contributed by @dklimpel.
\ No newline at end of file
diff --git a/changelog.d/8690.misc b/changelog.d/8690.misc
deleted file mode 100644
index 0f38ba1f5..000000000
--- a/changelog.d/8690.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fail tests if they do not await coroutines.
diff --git a/changelog.d/8693.misc b/changelog.d/8693.misc
deleted file mode 100644
index b588bdd3e..000000000
--- a/changelog.d/8693.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add more type hints to the application services code.
diff --git a/changelog.d/8694.misc b/changelog.d/8694.misc
deleted file mode 100644
index c90a6375a..000000000
--- a/changelog.d/8694.misc
+++ /dev/null
@@ -1 +0,0 @@
-Improve start time by adding an index to `e2e_cross_signing_keys.stream_id`.
diff --git a/changelog.d/8697.misc b/changelog.d/8697.misc
deleted file mode 100644
index 7982a4e46..000000000
--- a/changelog.d/8697.misc
+++ /dev/null
@@ -1 +0,0 @@
- Re-organize the structured logging code to separate the TCP transport handling from the JSON formatting.
diff --git a/changelog.d/8698.misc b/changelog.d/8698.misc
deleted file mode 100644
index 6b777fb29..000000000
--- a/changelog.d/8698.misc
+++ /dev/null
@@ -1 +0,0 @@
-Use Python 3.8 in Docker images by default.
diff --git a/changelog.d/8700.feature b/changelog.d/8700.feature
deleted file mode 100644
index 47d63dce0..000000000
--- a/changelog.d/8700.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add an admin API for local user media statistics. Contributed by @dklimpel.
diff --git a/changelog.d/8701.doc b/changelog.d/8701.doc
deleted file mode 100644
index e2e8b2f79..000000000
--- a/changelog.d/8701.doc
+++ /dev/null
@@ -1 +0,0 @@
-Notes on SSO logins and media_repository worker.
\ No newline at end of file
diff --git a/changelog.d/8702.misc b/changelog.d/8702.misc
deleted file mode 100644
index f20085cbe..000000000
--- a/changelog.d/8702.misc
+++ /dev/null
@@ -1 +0,0 @@
-Remove the "draft" status of the Room Details Admin API.
\ No newline at end of file
diff --git a/changelog.d/8705.misc b/changelog.d/8705.misc
deleted file mode 100644
index 1189464a0..000000000
--- a/changelog.d/8705.misc
+++ /dev/null
@@ -1 +0,0 @@
-Improve the error returned when a non-string displayname or avatar_url is used when updating a user's profile.
\ No newline at end of file
diff --git a/changelog.d/8706.doc b/changelog.d/8706.doc
deleted file mode 100644
index 96a0427e7..000000000
--- a/changelog.d/8706.doc
+++ /dev/null
@@ -1 +0,0 @@
-Document experimental support for running multiple event persisters.
diff --git a/changelog.d/8708.misc b/changelog.d/8708.misc
deleted file mode 100644
index be679fb0f..000000000
--- a/changelog.d/8708.misc
+++ /dev/null
@@ -1 +0,0 @@
-Block attempts by clients to send server ACLs, or redactions of server ACLs, that would result in the local server being blocked from the room.
diff --git a/changelog.d/8712.misc b/changelog.d/8712.misc
deleted file mode 100644
index 90d63a9a2..000000000
--- a/changelog.d/8712.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add metrics the allow the local sysadmin to track 3PID `/requestToken` requests.
diff --git a/changelog.d/8713.misc b/changelog.d/8713.misc
deleted file mode 100644
index c5d3f3216..000000000
--- a/changelog.d/8713.misc
+++ /dev/null
@@ -1 +0,0 @@
-Consolidate duplicated lists of purged tables that are checked in tests.
\ No newline at end of file
diff --git a/changelog.d/8714.doc b/changelog.d/8714.doc
deleted file mode 100644
index bda22714e..000000000
--- a/changelog.d/8714.doc
+++ /dev/null
@@ -1 +0,0 @@
-Add information regarding the various sources of, and expected contributions to, Synapse's documentation to `CONTRIBUTING.md`.
\ No newline at end of file
diff --git a/changelog.d/8718.misc b/changelog.d/8718.misc
deleted file mode 100644
index f1868ce70..000000000
--- a/changelog.d/8718.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add some `mdui:UIInfo` element examples for `saml2_config` in the homeserver config.
diff --git a/changelog.d/8719.misc b/changelog.d/8719.misc
deleted file mode 100644
index 9aabef8fc..000000000
--- a/changelog.d/8719.misc
+++ /dev/null
@@ -1 +0,0 @@
-Improve the error message returned when a remote server incorrectly sets the `Content-Type` header in response to a JSON request.
diff --git a/changelog.d/8722.feature b/changelog.d/8722.feature
deleted file mode 100644
index 0413d8838..000000000
--- a/changelog.d/8722.feature
+++ /dev/null
@@ -1 +0,0 @@
-Add `displayname` to Shared-Secret Registration for admins.
\ No newline at end of file
diff --git a/changelog.d/8726.bugfix b/changelog.d/8726.bugfix
deleted file mode 100644
index 831f773a2..000000000
--- a/changelog.d/8726.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix bug where Synapse would not recover after losing connection to the database.
diff --git a/changelog.d/8728.bugfix b/changelog.d/8728.bugfix
deleted file mode 100644
index 8064aad0f..000000000
--- a/changelog.d/8728.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix bug where the `/_synapse/admin/v1/send_server_notice` API could send notices to non-notice rooms.
diff --git a/changelog.d/8729.bugfix b/changelog.d/8729.bugfix
deleted file mode 100644
index 7f59a3b9e..000000000
--- a/changelog.d/8729.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix port script fails when DB has no backfilled events. Broke in v1.21.0.
diff --git a/changelog.d/8730.bugfix b/changelog.d/8730.bugfix
deleted file mode 100644
index dcc42bc98..000000000
--- a/changelog.d/8730.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix port script to correctly handle foreign key constraints. Broke in v1.21.0.
diff --git a/changelog.d/8742.doc b/changelog.d/8742.doc
deleted file mode 100644
index cbae6cfdc..000000000
--- a/changelog.d/8742.doc
+++ /dev/null
@@ -1 +0,0 @@
-Migrate documentation `docs/admin_api/event_reports` to markdown.
\ No newline at end of file
diff --git a/changelog.d/8746.doc b/changelog.d/8746.doc
deleted file mode 100644
index 6baf58ba7..000000000
--- a/changelog.d/8746.doc
+++ /dev/null
@@ -1 +0,0 @@
-Add some helpful hints to the README for new Synapse developers. Contributed by @chagai95.
\ No newline at end of file
diff --git a/changelog.d/8752.misc b/changelog.d/8752.misc
deleted file mode 100644
index eac92e9d1..000000000
--- a/changelog.d/8752.misc
+++ /dev/null
@@ -1 +0,0 @@
-Speed up repeated state resolutions on the same room by caching event ID to auth event ID lookups.
diff --git a/changelog.d/8755.bugfix b/changelog.d/8755.bugfix
deleted file mode 100644
index 42bbed3ac..000000000
--- a/changelog.d/8755.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix port script so that it can be run again after a failure. Broke in v1.21.0.
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 3e1df2b03..537f2239e 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -48,7 +48,7 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.22.1"
+__version__ = "1.23.0rc1"
 
 if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
     # We import here so that we don't have to install a bunch of deps when