@Vitor Pamplona is working on this: nostr:nevent1qqsxes7e7r773kttrjjf3kw98pahz430jkn999jxuqsnw3qq7gprslcpr4mhxue69uhhxatsv4e8getnw3hx2apwdehhxarjxyhxxmmdqgsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqrqsqqqqqplhuysh
Group DMs is the only feature that has been released. Relays tend to hate private stuff, so it has been somewhat of a slog to build momentum. Maybe the next class of relays will do private events only. Who knows..
Thank you for making the internet a better place.