I am trying my hand at the beta version of Java EE 5. I've downloaded the complete bundle and installed it without any issues. I am anxious to begin develpoing apps with the EJB 3.0 technology, but I've been unable to do so thus far. I have had bad luck with Glassfish so far and the Netbeans 5.5 IDE still seems buggy to me. Don't take my word for it though...give it a shot for yourself. I fear that the issues I've seen thus far have something to do with the Postgresql back end whih I'm trying to use.
I will give the latest Netbeans 5.5 a shot with the beta SDK and report.