See jboss.org/resteasy for relevant links for downloads/documentation.
3.0-beta-4 is our last beta! Everything should be implemented. JAX-RS 2.0 Final is being voted on in the JCP. We’ll be obtaining the TCK soon and starting work on getting certified. There’s also some architectural work that needs to be finished for 3.0. We’ll have a short RC release sometime in May, then a 3.0 Final Release early June.
2.3.6 is just a maintenance release.
Bill the Plumber 
Apr 30, 2013 @ 19:53:56
Hi, I have a question, now that 3.0 is almost out, do you think that for the final 3.0 with Netty, you’ll use Netty 4? right now is CR, but I know pretty soon there will be an official release.
Also, do you know if it will have Comet support for Netty as well?
Thanks!