It seems that there is now a Mirrodin Besieged theme available for Xbox users looking to bring some more MTG to their console. You can check it out on the Xbox Markeplace, where currently there are two options, both a Theme Pack (#1) and Gamer Pictures Pack (#1). Whether the label as #1 hints that there are more to come or is simply there as a creature of habit we don't know.

Check it out in the Xbox Marketplace.