Netbeans 6.5 is the best version on Netbeans I have worked on so far - unfortunately coming out at a time I had already switched to MyEclipse. It is lightening FAST and more responsive. Also most user frustrations have been fixed in this release. Here are a list of notable features included in this release :-
- Better Javascript debugging
- Support for open source libraries
- Spring and Grails support *** (Much better than Eclipse plugin)
- Hot deploy
- Improved Swing GUI builder (Wonder who uses this!!)
- Javadoc improvements
- Improved Eclipse project imports - definitely ;-)
Release information is here : http://www.netbeans.org/community/releases/65/