Yeah, I'm using the beta. It's still called Longhorn but still. It's pretty sweet. It doesn't have the really cool program switching interface but it's still really cool. If you want some screens drop me a line and I'll see what I can do.
PS- The one major problem I see is that it doesn't run my 64 emu (PJ 64). That's kinda pissing me off but I'm gonna work on it.