We haven’t made any announcements about Airplay 2 support in Roon. Right now, Roon does not support Airplay 2.
Airplay 2 devices should be able to play Airplay streams, and we fixed some issues related to this in the last few months.
So, to be clear, while Airplay 2 devices should work with Roon, Roon is still sending Airplay, and people shouldn’t confuse this for Airplay 2 support.