GWT Project
The 2.4 General Availability release of GWT contains new App Engine tools for Android, incremental RPC tooling, Apps Marketplace support, a faster UI Designer with better UiBinder support, a persistent unit cache for faster iterative development, a scrolling DataGrid with fixed header, Beans.isDesignTime() support, and bundled installers that make it easier to install and configure the GPE, GWT and GAE.