It will be open source, end to end encrypted using Signal’s double ratchet encryption protocol, and he plans to make it easy for fediverse platforms to integrate it. The beta will release later this month.
He’s also the creator of https://fedidb.org btw
I’d be so excited to see any fediverse do the discord server/channel setup, and as soon as I see it I can start convincing friends to join it.
Matrix has this. It’s federated but doesn’t communicate with Lemmy.