Details about upcoming Java 6.0 a.k.a Mustang and even 7.0 Dolphin are slowly emerging. It seems that Sun has reacted to the demands of the open source community and it has changed the way how the future Java releases are going to be developed. Plus there are interesting things coming.
It seems that Mustang (6.0) will be feature release, and that Dolphin (7.0)
should be a step up release like the 5.0 was. More