upstreamed into Synapse as of Sept 2024, and the proxy was sunset in Nov 2024: https://matrix.org/blog/2024/11/14/moving-to-native-sliding-sync/ https://matrix.

upstreamed into Synapse as of Sept 2024, and the proxy was sunset in Nov 2024: https://matrix.org/blog/2024/11/14/moving-to-native-sliding-sync/ https://matrix.org/blog/2024/11/14/moving-to-native-sliding-... Not that many clients have actually adopted it though, because the MSC is still not 100% finalised - it's currently entering the final review stages at last now over at https://github.com/matrix-org/matrix-spec-proposals/pull/4186 https://github.com/matrix-org/matrix-spec-proposals/pull/418.... Right now Element X uses it (exclusively), and Element Web has experimental support for it; I'm not sure if any others actually use it yet.