Note this release changes the major field of version number since there were some deprecated APIs removed (see N&N for details).
We fixed / closed over 70 bugs during this release cycle! See News & Noteworthy or detailed bug list.
The PDT source code is contained in the org.eclipse.pdt.git repo and for this release is tagged R4_0_0.
The PDT provides it's own update site with all features included. For 4.0, this site is located at http://download.eclipse.org/tools/pdt/updates/4.0