bevy_matchbox and bevy_ggrs have been released, with Bevy 0.12 support.
bevy_ggrs in particular has some shiny new features:
- clone-based snapshotting (better perfomance)
- exchanging checksums across peers for desync detection
- checksumming foreign types (like Transform)
I've updated my "Extreme Bevy" p2p web game tutorial series to take advantage of them all. Including a new chapter on desync detection:
https://johanhelsing.studio/posts/extreme-bevy-desync-detection