What happened to the e4 flexible resources work?
The Resources component of the e4 project was originally created to explore problems with the Eclipse platform’s rigid workspace resource model. This work, led by Freescale Semiconductor with contributions from several others, has since matured and has been incorporated to the Eclipse SDK Helios (3.6) release. Since this work resulted in a relatively small set of fully compatible changes to the existing resource model, we decided it was appropriate to release it in our 3.6 minor release rather than waiting for the major 4.0 release.