An early alpha release of e4, the next generation of the Eclipse platform, is now available.
The mission of the e4 project is to build a next generation platform for pervasive, component-based applications and tools. See the about page as well as the original project proposal for more details.
I tried to install, with ADT and Android SDK. And also tried Hello Android. It seem to be compatible. The install procedure is same as Install Android SDK on Eclipse 3.5 Galileo.