I've played with the final release of NB55 and it really is great. I have some gripes still (Can't get the UML projects into SVN, this just doesn't seem possible). I'll file an issue sometime soon.
The UML projects are great though. Especially for Java ME stuff, a good design is really important when you have to put good programming practices aside because that just isn't efficient enough. Sofar I've used the State Diagram and some Class diagramming. But it really is great. Works pretty much like a charm, although there are some little nuisances. All will be files as an issue once I know it's not me.
Another little issue is the fact that the CDC version of MobPack isn't available for the final release. Integration of emulators from Sony Ericsson and Nokia still seems less than excellent. But the lack of a final version is a shame.
Any ideas on its release NB MobPack guys?