Bethesda has revealed a new teaser image for the upcoming DLC for The Elder Scrolls: Skyrim with Dawnguard. For now, the DLC is releasing as a timed exclusive on the Xbox 360 before anywhere else. Not much is known about the DLC at present, but Bethesda vows to reveal more about the content at this years E3 event.
The Dawnguard DLC is expected to release for The Elder Scrolls: Skyrim sometime this summer for the Xbox 360.
Source: Bethesda Blog