Chris Adamson has an interesting article on the OnJava.com site reviewing the top 10 Request for Enhancements (RFEs) for changes and new additions to Java, in this case for the Dolphin release which is Java SE 7.0 (6.0 (Mustang) is already available for beta download – see download section here).
Some of the interesting requests are the addition of Design by Contract support using pre and post conditions, the addition of ‘struct’ support, and upgrading JEditorPane to support HTML 4.x (a jump from the current 3.2 support).