This release features a new capability that will make my fellow hackers curious: the ability to dynamically compile Java code on the server, and inject the resulting class in a classloader. Then you follow me, it is the foundation for dynamic pages, including XPages. It even provides a managed bean for handling these dynamic XPages. In this case, they are no longer interpreted, but compiled as they would be by Designer. Except that all happens in memory at runtime.
The Bazaar doesn't have yet a demo of the feature but the Playground delivered with the SDK will soon take advantage of it.