We just published RAP 2.3M2, the second (and second to last) milestone
of the RAP 2.3 / Luna release in June.
With this milestone we introduce a cool new feature that lets your users
upload files by simple dragging them from their OS onto a some widget in
the RAP application. We also have some new API for singletons with
session and application scope.
As always, take a look at the New and Noteworthy  page for more
details. The milestone is available on our download page  and on
I would also like to address a bug that recently appeared in Webkit
browser (Chrome/Safari/Opera) which can cause RAP widgets to become
invisible. We are working  on implementing a workaround in RAP, which
will be included in M3. For solutions regarding RAP 2.2 and earlier,
please visit the RAP FAQ .