BF3 gets updated on all platforms
Releases Back to Karkand as part of it
Battlefield 3 owners who purchased the “Limited Edition” version of the title will gain access to Back to Karkand, which features new reimagined maps from Battlefield 2 for free. Otherwise, you will be stuck paying $15 or 1,200 Microsoft Points to get access to these additional maps. Of course, you still get the patch for free.
An additional Map Pack is said to be on the horizon for Battlefield 3, but details are still sketchy as to what DICE might be planning for its next DLC offering.