The PDT source code is contained in the org.eclipse.pdt.git repo and for this release is tagged R3_3. Service releases are planned which will have the tags R3_3_1 for SR-1.
The PDT provides it's own update site with all features included. For 3.3, this site is located at http://download.eclipse.org/tools/pdt/updates/3.3
API compatability is maintained with previous 3.x PDT releases. PDT 3.3 will run against 3.8 and newer Eclipse Platform releases.
PDT has all Strings externalized.
PDT targets all supported Eclipse enviornments.
Maintenance
Work with community
Library folders
Parser improvements