Someone from the Battlefield 3 forums dug up this poster that revealed plans for extra maps to be included in the Limited Edition (and remember that EA’s Limited Editions usually simply mean buying the game new). A four-map redo of the “Strike at Karkand” map from Battlefield 2 will be included. If you don’t buy the Limited Edition, the content will be available a month after the fall 2011 launch.
Apparently, someone picked this off of a European online store by running a URL. Currently, Electronic Arts is officially saying that details on the DLC will be available in February but we’ll keep you updated once EA confirms or denies this poster as authentic.