Good write up over at Eurogamer on Multiplayer BF3. He focuses on Damavand Peak, which sound like will become a favorite. Kinda sounds like Market Garden from BF42 with the parachute drop, worth a read: Eurogamer BF3 Multiplayer Preview
I'm not a big fan of Rush mode because of the narrow choke point style maps they have used in the past. This map could change my mind.