We just released the source code for the reference implementation of JSR 311 as project Jersey. Paul's post has more details.
It seems we've already had our first bug report, keep them coming.
I've been offline on holiday in the UK for the last couple of weeks and it seems I've been missing out on an interesting debate about whether a description language for RESTful services is useful or not. The debate so far is nicely summarized by Arnon Rotem-Gal-Oz in Debate: Does REST Need a Description Language?.
Obviously as the author of the WADL specification I think there is some utility in...