So far I like the update, there is some lag but the 4g data connection seems much more stable, only time will tell if that lasts, and the battery life is much better. One annoying thing is that I lost all my music but luckily I had it backed up so no big deal.
I'm having issues getting my wife's TB to download the update. Randomly in middle of the download it will stop and pop up a error saying that it can't reach the server. I'll keep trying tonight and hopefully it will eventually download the update. This update is long overdue and I'm hoping it will take care of a few of the issues that my wife doesn't like about the phone.