In a previous post I promised to make a review for a book about JBoss AS 7. At that time I still didn't dig into it, and didn't know that our latest NetBeans IDE (7.1) still does not support the seventh generation of JBoss servers. You may see some informative rant going on here. And to be clear - hacking to simulate support thanks to the configurations of the 5-th or 6-th versions wouldn't help. JBoss 7 is completely redesigned to be modular. So the default support (unsurprisingly) comes from the rival - eclipse ;)
While we're waiting you may actually read the book, because it is a good one. If you need first to read the review, it is here on my other blog.