Jersey 0.9 is out -- 1.0 is Next!
By pelegri on Aug 24, 2008
Almost final, Jersey 0.9 is Out! This is the implementation that goes with the 0.9 version of the spec (Docs, Spec); this release also has Maven packages for its components at http://download.java.net/maven/2/com/sun/jersey/.
JAX-RS (aka JSR 311) has done a very good job on transparency and I think that has reflected in the quality and adoption. See Jersey for more stories.