It seems like another facet of the first-person shooter war has reared its ugly head today when Sony and EA revealed that expansions for Battlefield 3 will arrive one week earlier on the PS3.  Microsoft and Activision already have a similar deal granting Xbox users early access to Call of Duty downloadable content.  Back to Karkand is the first Battlefield add-on and will include four updated Battlefield 2 maps.  The DLC comes free with an in-box coupon for early adopters of Battlefield 3, though it may not be available for immediate download.  Having trouble waiting to get your battle on?  The Battlefield 3 beta is launching in one week!

[via Joystiq]