SpringSource (which, it's easy to forget, is now a division of VMware), introduced Spring 3.0 today, a major new version of the company’s Java development framework. SpringSource is targeting developers focused on web and service-based applications with the new release. This release of Spring's framework is the first since VMware's acquisition of the company, and version 3.0 is backward compatible with version 2.5. It has full REST support for web applications.