I'm enjoying my vacation :) so I have the time go over some of the NetBeans API and learn some things.
Well, there is a lot on this topic (javadoc, tutorials, blogs, ...), but I do feel we need a good book on this topic. The one that you can buy today is 4 years old and talks about 3.6 release. We have come such a long way from the 3.6 times.
PLEASE, give us a new book!