* Deprecate device methods in MatrixClient ([\#3357](https://github.com/matrix-org/matrix-js-sdk/pull/3357)). * Total summary count ([\#3351](https://github.com/matrix-org/matrix-js-sdk/pull/3351)). Contributed by @toger5. * Audio concealment ([\#3349](https://github.com/matrix-org/matrix-js-sdk/pull/3349)). Contributed by @toger5. * Correctly accumulate sync summaries. ([\#3366](https://github.com/matrix-org/matrix-js-sdk/pull/3366)). Fixes vector-im/element-web#23345. * Keep measuring a call feed's volume after a stream replacement ([\#3361](https://github.com/matrix-org/matrix-js-sdk/pull/3361)). Fixes vector-im/element-call#1051. * Element-R: Avoid uploading a new fallback key at every `/sync` ([\#3338](https://github.com/matrix-org/matrix-js-sdk/pull/3338)). Fixes vector-im/element-web#25215. * Accumulate receipts for the main thread and unthreaded separately ([\#3339](https://github.com/matrix-org/matrix-js-sdk/pull/3339)). Fixes vector-im/element-web#24629.