Announced December 13, the latest release of Spring Framework, v3.1, has been made made generally available.
Among the other changes are full support of Java7 and Servlet 3.0 annotations, for web.xml-free configurations. Support for Hibernate v4 is included, although Hibernate v4 is still in development; full support has been pledged.
A quick test showed that the new 3.1.RELEASE JAR files can be dropped into an existing 3.0.5.RELEASE or 3.0.6.RELEASE project and it will work with no additional changes. Of course, there are plenty of things that can change!