Guy Cocker runs down the five best things Battlefield 3's Back to Karkand DLC has to offer in this exclusive preview. The Back to Karkand expansion will be launching next month for PC, PS3, and Xbox 360 but will be arriving one week early on PS3. While the content included is probably worth the $15 they’re asking for, owners of the limited edition of Battlefield 3 will get the expansion for free, as promised by DICE before launch.