Highlights include Sliding Sync (instant login/launch/sync), Native OIDC (industry-standard authentication), Native Group VoIP (end-to-end encrypted large-scale voice & video conferencing) and Faster Joins (lazy-loading room state when your server joins a room).
Because Synapse is already widely used. The Matrix foundation is also building Dendrite, which is in beta and written in Go.
Conduit is another server, in Rust https://gitlab.com/famedly/conduit
Dendrite has been in Beta for so long.
I remember installing Synapse 6 years ago thinking “whatever, I’ll reinstall it anyway”.
Welp
Yup, that’s the annoying state of Matrix: nothing ever gets completed and running smoothly, because everything’s in a constant state of flux