This page is now deprecated starting with EEF 1.6.0, find the updated documentation on the EEF homepage.
EEF Source Code
EEF Source code is available on eclipse git : http://git.eclipse.org/c/eef/org.eclipse.eef.git/
On the road for the Eclipse Simultaneous Release
The steps to integrate EEF in the Eclipse Simultaneous Release are described on this page: EEF In Eclipse Release Train