It is not worth waiting at all. Disappoinment is the only word that popped up in my head.
The only good thing is snappier (better RAM and CPU cycle management) and Pulse Audio, this is what it should have been since the beginning for the N900. I'm quite surprise that there isn't any changes to the leaked version of the OS.
I thought we are expecting something better than the beta testing image, so I reflashed it back to PR1.2 and waiting for PR1.3 via OTA but quite disappointed that PR1.3 is pretty the same as the leaked PR.PE version. Lol wasted me a lot of time and Gigs in downloading over 140apps back onto my N900.