Here are some of the more noteworthy features available in WTP 3.3 milestone build M4 (December 10th, 2010). Download it now or give the Indigo M4 packages a spin, many of which feature portions of WTP M4.
Projects
Here are the bugs that were fixed during this milestone.
The above features are just the ones that are new since the last milestone build. Summaries for earlier builds: