This new release introduce a lot of really interesting feature to the plateform for java developper : here.

One of the most interesting, is the wizzard to help to Clean Up which will help you to convert your sources to Java 5.0 and benefit of all the novelties.

It already supports Java 6.0 which is still in beta for now.

A lot of tooltips are now included and fully functionnal and give very helpfull hints for coding.

Follow this link to download this pretty good piece of Open Source software

Update

A very good article from Ed Burnette could be found here.