They added:
Smart stay to keep the screen on when in use via eye tracking in the front facing cam.
S beam which uses NFC and WiFi to move large files between phones .
Best photo which takes 8 pictures in succession choosing the best shot taken in the burst.
AllShare Play which uses DLNA and Wifi-direct to wirelessly share media and files.
Photo share which will instantly push pictures to your friends galaxy s3 devices within range.
Social tag which integrates with the likes of Facebook to assist with tagging pictures of your friends.
Pop up play which overlays any videos you are watching over the phones GUI effacing you to watch the video and user your phone at the same time.
Multi window which enables the user to run two apps at the same time.
Improved TouchWiz interface - they actually made it stuck a lot less!
What they should have done is innovated some better internals and an extra row of icons...
The dock got an extra icon. Does that count?