What other multiplayer maps are there on Battlefield 3?

I know that there's going to be Caspian Border, and Operation Metro, but what other multiplayer maps are there going to be if any?What other multiplayer maps are there on Battlefield 3?
There will be several other multiplayer maps, including many maps from Battlefield: Bad Company 2 if you preordered the game, however, very little information is known about any of them.



We can probably assume there will be a desert, jungle, city, snow, and other enviroment maps though.