Here's a list of the most noteworthy things in the RAP 2.1 RC1 release candidate which is available for download since May 24, 2013.
The RAP server now accepts re-sent requests. In case of a connection problem, a client can decide to retry and send the same request again. If the server had already received and processed the request, it will send the same response again. For details, see bug 383397.
The error message box that is displayed in case of network problems, session timeout etc. got a slightly new look. All error messages can now be internationalized. For details, see bug 365436.
This list shows all bugs that have been fixed for this release candidate.
The above features are just the ones that are new since the last milestone build. Summaries for earlier builds:
After 6+ years of development in the 1.x stream, we're cleaned up some API in RAP 2.0. To assist you with the migration from 1.x to 2.0, we maintain a migration guide.