Some are mentioning a Screen Of Death problem that I've yet to experience in several days of running this buttery smooth and fast leak. Only a couple of very smallish issues... nobody can get the Wifi Tether app to work, and Ford Sync's Mobile Apps (Stitcher, Slacker, Pandora, etc.) don't appear to work, as the car can't find any mobile apps on my 2012 Ford Mustang. Otherwise, it's great. 3g and Wifi reception and speed has been noticeably improved. I can now stream Pandora and Slacker everywhere in my town without stops and stutters, a feat no Sprint phone has been able to accomplish yet.
In the thread over on XDA, they mention that there are many more toggles in the update, but are not turned on. I kinda miss that moving of the toggles when I drop down the notification bar, so hopefully that will make a return. Wish for an option to remove the brightness slider that is useless and takes up room where I need it.
It's a terrific update... the best I've seen on any Android phone ever. Quite amazing to me that Samsung is actually planning to be the first out of the gate updating a phone with Jelly Bean. So unlike them.