Besides the new Android features, Sammy is tossing in some of its proprietary capabilities like "Smart Stay". This feature uses the front-facing camera to make sure that you're awake. Once the camera detects that you're sleeping, the screen follows you to dreamland. And for those of you Rogers customers packin' the Samsung Galaxy S II LTE but have Samsung Galaxy S III envy, you'll be happy to know that after the update your phone will be running the same Android 4.1.2 OS build powering Samsung's current flagship model.
source: Rogers, SamsungUpdates, AndroidPolice via AndroidAuthority