A bit later than we would have liked, but with some bugs spotted and fixed, this is the second (and possibly) last RC for wt 3.3.1.
Here are the main links:
C++ Wt: download wt-3.3.1-rc2.tar.gz and read its release notes
Java JWt: download jwt-3.3.1-rc2.zip and read its release notes
Most of the changes in this release are incremental bug fixes and smaller feature improvements as detailed in the release notes.