I've installed this build on mine and 2 other friends all on AT&T.
No bugs, no leaks, no errors. All 3rd party apps work fine, OS is faster
than 4.6. Lovin the picture browser, larger thumbnails, and much much faster
render. Camera features all work, SMS works properly, more memory available after (I think due to it moveing BB IM from installed app to OS app side of the device, freeing up more app memory) Reboots faster and gives a nice progress bar as to what its doing, multi-media is better and faster.
Loving this OS so far, esecially since I dont have to patch it to get anything to work.