- Add Unix Socket support for HTTP Replication Listeners. [Document and provide usage instructions](https://matrix-org.github.io/synapse/v1.89/usage/configuration/config_documentation.html#listeners) for utilizing Unix sockets in Synapse. Contributed by Jason Little. ([\#15708](https://github.com/matrix-org/synapse/issues/15708), [\#15924](https://github.com/matrix-org/synapse/issues/15924)) - Allow `+` in Matrix IDs, per [MSC4009](https://github.com/matrix-org/matrix-spec-proposals/pull/4009). ([\#15911](https://github.com/matrix-org/synapse/issues/15911)) - Support room version 11 from [MSC3820](https://github.com/matrix-org/matrix-spec-proposals/pull/3820). ([\#15912](https://github.com/matrix-org/synapse/issues/15912)) - Allow configuring the set of workers to proxy outbound federation traffic through via `outbound_federation_restricted_to`. ([\#15913](https://github.com/matrix-org/synapse/issues/15913), [\#15969](https://github.com/matrix-org/synapse/issues/15969)) - Implement [MSC3814](https://github.com/matrix-org/matrix-spec-proposals/pull/3814), dehydrated devices v2/shrivelled sessions and move [MSC2697](https://github.com/matrix-org/matrix-spec-proposals/pull/2697) behind a config flag. Contributed by Nico from Famedly, H-Shay and poljar. ([\#15929](https://github.com/matrix-org/synapse/issues/15929)) - Fix a long-standing bug where remote invites weren't correctly pushed. ([\#15820](https://github.com/matrix-org/synapse/issues/15820)) - Fix background schema updates failing over a large upgrade gap. ([\#15887](https://github.com/matrix-org/synapse/issues/15887)) - Fix a bug introduced in 1.86.0 where Synapse starting with an empty `experimental_features` configuration setting. ([\#15925](https://github.com/matrix-org/synapse/issues/15925)) - Fixed deploy annotations in the provided Grafana dashboard config, so that it shows for any homeserver and not just matrix.org. Contributed by @wrjlewis. ([\#15957](https://github.com/matrix-org/synapse/issues/15957)) - Ensure a long state res does not starve CPU by occasionally yielding to the reactor. ([\#15960](https://github.com/matrix-org/synapse/issues/15960)) - Properly handle redactions of creation events. ([\#15973](https://github.com/matrix-org/synapse/issues/15973)) - Fix a bug where resyncing stale device lists could block responding to federation transactions, and thus delay receiving new data from the remote server. ([\#15975](https://github.com/matrix-org/synapse/issues/15975)) - Better clarify how to run a worker instance (pass both configs). ([\#15921](https://github.com/matrix-org/synapse/issues/15921)) - Improve [the documentation](https://matrix-org.github.io/synapse/v1.89/admin_api/user_admin_api.html#login-as-a-user) for the login as a user admin API. ([\#15938](https://github.com/matrix-org/synapse/issues/15938)) - Fix broken Arch Linux package link. Contributed by @SnipeXandrej. ([\#15981](https://github.com/matrix-org/synapse/issues/15981)) - Remove support for calling the `/register` endpoint with an unspecced `user` property for application services. ([\#15928](https://github.com/matrix-org/synapse/issues/15928)) - Mark `get_user_in_directory` private since it is only used in tests. Also remove the cache from it. ([\#15884](https://github.com/matrix-org/synapse/issues/15884)) - Document which Python version runs on a given Linux distribution so we can more easily clean up later. ([\#15909](https://github.com/matrix-org/synapse/issues/15909)) - Add details to warning in log when we fail to fetch an alias. ([\#15922](https://github.com/matrix-org/synapse/issues/15922)) - Remove unneeded `__init__`. ([\#15926](https://github.com/matrix-org/synapse/issues/15926)) - Fix bug with read/write lock implementation. This is currently unused so has no observable effects. ([\#15933](https://github.com/matrix-org/synapse/issues/15933), [\#15958](https://github.com/matrix-org/synapse/issues/15958)) - Unbreak the nix development environment by pinning the Rust version to 1.70.0. ([\#15940](https://github.com/matrix-org/synapse/issues/15940)) - Update presence metrics to differentiate remote vs local users. ([\#15952](https://github.com/matrix-org/synapse/issues/15952)) - Stop reading from column `user_id` of table `profiles`. ([\#15955](https://github.com/matrix-org/synapse/issues/15955)) - Build packages for Debian Trixie. ([\#15961](https://github.com/matrix-org/synapse/issues/15961)) - Reduce the amount of state we pull out. ([\#15968](https://github.com/matrix-org/synapse/issues/15968)) - Speed up updating state in large rooms. ([\#15971](https://github.com/matrix-org/synapse/issues/15971)) * Bump anyhow from 1.0.71 to 1.0.72. ([\#15949](https://github.com/matrix-org/synapse/issues/15949)) * Bump click from 8.1.3 to 8.1.6. ([\#15984](https://github.com/matrix-org/synapse/issues/15984)) * Bump cryptography from 41.0.1 to 41.0.2. ([\#15943](https://github.com/matrix-org/synapse/issues/15943)) * Bump jsonschema from 4.17.3 to 4.18.3. ([\#15948](https://github.com/matrix-org/synapse/issues/15948)) * Bump pillow from 9.4.0 to 10.0.0. ([\#15986](https://github.com/matrix-org/synapse/issues/15986)) * Bump prometheus-client from 0.17.0 to 0.17.1. ([\#15945](https://github.com/matrix-org/synapse/issues/15945)) * Bump pydantic from 1.10.10 to 1.10.11. ([\#15946](https://github.com/matrix-org/synapse/issues/15946)) * Bump pygithub from 1.58.2 to 1.59.0. ([\#15834](https://github.com/matrix-org/synapse/issues/15834)) * Bump pyo3-log from 0.8.2 to 0.8.3. ([\#15951](https://github.com/matrix-org/synapse/issues/15951)) * Bump sentry-sdk from 1.26.0 to 1.28.1. ([\#15985](https://github.com/matrix-org/synapse/issues/15985)) * Bump serde_json from 1.0.100 to 1.0.103. ([\#15950](https://github.com/matrix-org/synapse/issues/15950)) * Bump types-pillow from 9.5.0.4 to 10.0.0.1. ([\#15932](https://github.com/matrix-org/synapse/issues/15932)) * Bump types-requests from 2.31.0.1 to 2.31.0.2. ([\#15983](https://github.com/matrix-org/synapse/issues/15983)) * Bump typing-extensions from 4.5.0 to 4.7.1. ([\#15947](https://github.com/matrix-org/synapse/issues/15947))