As reported by Eduardo Pelegri-Llopart, the JSR 311 was approved by the JCP Executive Committee for development. The results of the vote are also available here. Following a request from Apache, the name of the JSR is now “Java API for RESTful Web Services”.
You can check a comprehensive list of posts following the initial announce on my updated blog post. There is a clear interest from the community for such an API. Some voiced concerns about the JCP process, others about the idea of starting with a higher level API before providing a solid lower level API as a foundation. Some don’t want annotations to abstract the supposed complexity of HTTP when others are afraid that the API won’t be simple enough.
In general, people seem to be positive and supportive of the initiative. The expert group now has an important task in its hands. I hope we will be able to work as closely as possible with the rest of the community to gain a constant feed-back and produce a great and widely accepted API!