Glassfish v4 Is Out (with JavaEE 7)
Glassfish v4 (the "Killer Appserver") is available for download
The glassfish.org website was redesigned as well. It looks clean and fresh.
I'm using Glassfish v4 for a while in daily development--it looks promising. Glassfish v4 also ships with NetBeans (JavaEE). With NetBeans and Glassfish you will get the most efficient JavaEE 7 environment to start (double click, wait 2 minutes) and to develop your applications (everything you need comes out-of-the-box--without any plugin hell).
See you at Java EE Workshops at MUC Airport--I will use Glassfish v4 for live hacking!