NetBeans Java IDE 5.0 beta is released .
New Features include:

• Comprehensive support for developing IDE Module Plugins and rich client applications based on the NetBeans Platform.
• New intuitive GUI builder Matisse.
• New and redesigned CVS support.
• Weblogic 9 and JBoss 4 support.
• Editor enhancements.

Checkout the full feature list here. I’m currently downloading the beta, more on the IDE features, once I start using it.