After several days of playing with the new firmware I have a few findings:
As mentioned by others, I'm having GPS issues. IN addition to losing BB Maps, GoogleMaps is working, but not in GPS mode. Additionally, going to Options... GPS, I am never able to get a Sat fix (geography/time spend waiting has no impact on this result).
E-mail attachments: this version seems to have broken several file attachments. I can't open office docs or wav's for example. JPG's and PDF's still work though.
For the first issue, I've seen numerous threads on dealing with it. I probably won't get around to it until I'm really stuck somewhere and need GPS.
For the second issue, this is kind of a big issue as my voice mail comes through as a WAV attachment. I also occasionally need to view office docs on the BB (though I usually try to avoid this). I haven't researched this yet to see if others are having similar issues.