GameSpot played Gold Rush on one map during EA's GDC event in seven versus seven matches (all on Xbox 360s -- the final game will support 24 players for both the 360 and PS3). The map -- called Ascension -- was set in a high mountain village with plenty of different levels connected by steep paths, and at 1km by 1km wide, is one of the smaller maps in the game.
In most other multiplayer shooters, defending a checkpoint usually involves finding some good cover in which to pummel any approaching attackers from, as the onus is on the attacking team to continue moving. However, being able to blow apart any cover (and any player hiding behind it) changes the strategy of defending, as GameSpot saw first-hand during their multiplayer games. Gold crates were usually hidden inside buildings and other structures, but it was folly to stay behind cover in one spot as all that was required was one well-placed rifle grenade shot to blow a camping defender to smithereens. Thus, both defenders and attackers are forced to continually keep moving in Bad Company.