http://e3.gamespot.com/story/6317535/e3-2011-battlefield-3-multiplayer-hands-onVery cool read and some nice updated vid stuff.
EDIT; SOME WILL APPRECIATE THIS:
The changes to the classes have some interesting results in the game. The Support Soldier gains experience points for laying down suppressing fire, while those caught in the crossfire will have their vision compromised through shaky-cam and other subtle visual effects. The engineer's flashlight may make him more visible to the enemy, but it also allows him to light up dark areas such the Metro tunnel, as well as startle anyone he shines it at, again through subtle visual effects.
You can also opt out of being revived by a medic, if you'd prefer to respawn as a new class, for example.