The first DLC of Battlefield 3, called 'Back to Karkand', will be released December 6, 2011 for Playstation 3. For PC and Xbox 360 player the expansion pack will be available one week later, December 13.

The pack includes the maps Strike at Karkand, Wake Island, Gulf of Oman, and Sharqui Peninsula. If you've been playing Battlefield 2, you should recognize these maps. They're rebuild for Battlefield 3 so the maps should be known by a lot of players. In addition, ten weapons from BF2 were included in Back To Karkand, as well as four brand new verhicles.

Players who have bought the limited edition of Battlefield 3 can download the DLC at no extra charge. That was one of the main reasons I've bought this edition because for everyone else, the pack will cost around 15 Euro.

Source: pcgames.de