* Deprecate `MatrixClient.checkUserTrust` ([\#3691](https://github.com/matrix-org/matrix-js-sdk/pull/3691)).
* Deprecate `MatrixClient.{prepare,create}KeyBackupVersion` in favour of new `CryptoApi.resetKeyBackup` API ([\#3689](https://github.com/matrix-org/matrix-js-sdk/pull/3689)).
* **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
* Allow calls without ICE/TURN/STUN servers ([\#3695](https://github.com/matrix-org/matrix-js-sdk/pull/3695)).
* Emit summary update event ([\#3687](https://github.com/matrix-org/matrix-js-sdk/pull/3687)). Fixes vector-im/element-web#26033.
* ElementR: Update `CryptoApi.userHasCrossSigningKeys` ([\#3646](https://github.com/matrix-org/matrix-js-sdk/pull/3646)). Contributed by @florianduros.
* Add `join_rule` field to /publicRooms response ([\#3673](https://github.com/matrix-org/matrix-js-sdk/pull/3673)). Contributed by @charlynguyen.
* Use sender instead of content.creator field on m.room.create events ([\#3675](https://github.com/matrix-org/matrix-js-sdk/pull/3675)).
* Provide better error for ICE Server SyntaxError ([\#3694](https://github.com/matrix-org/matrix-js-sdk/pull/3694)). Fixes vector-im/element-web#21804.
* Legacy crypto: re-check key backup after `bootstrapSecretStorage` ([\#3692](https://github.com/matrix-org/matrix-js-sdk/pull/3692)). Fixes vector-im/element-web#26115.