Skyrim's first piece of downloadable content, Dawnguard, will be out this summer for Xbox 360, publisher Bethesda said today. Dawnguard, which Bethesda trademarked earlier this year, could refer to a museum located in the city of Dawnstar that is dedicated to the "Order of the Mythic Dawn." A recent patch also hinted at potential future content such as frost elves and crossbow weapons.