The first expansion pack details for Battlefield 3 are here people: new maps, new vehicles and new dog tags to collect:

Utilising the power of Frostbite 2, the Back to Karkand Expansion Pack, remasters four of the greatest Battlefield maps in the franchise; Strike at Karkand, Wake Island, Gulf of Oman and Sharqi Peninsula with enhanced levels of destruction. In addition, this expansion pack includes five new dog tags, five new achievements/trophies, three new vehicles (DPV, BTR-90, F-35B STOVL jet fighter), 10 iconic Battlefield weapons and a new persistence system where players complete assignments to earn their rewards.

The expansion pack will be released in December 2011.