A new and free article about JAX-RS 2.0 and Java EE 7 is online.
I focussed on new features like asynchronous processing, configuration, interceptors, filters and the new client API.
Feedback is, as always, highly appreciated!
Classic Java EE 7 Workshops: Bootstrap, Effective and Architectures, July, 13th-15th
Online workshop: Java EE 7 Bootstrap