Bethesda Announces Skyrim DLC: Dawnguard, Coming This Summer

Bethesda has confirmed via blog post today that the first DLC pack for Skyrim, named Dawnguard, will be available later this summer. The company confirmed via Twitter that it will be a timed exclusive for the Xbox 360. Not much else is said in the blog post, but you can go ahead and look for yourselves.
But we can certainly speculate.
Just last month the website Ripten confirmed that Bethesda may already be laying the groundwork for new content. A recent patch revealed code for Snow Elves and the crossbow weapon, the site showed.
The Bethesda post mentions that there will be more details on Dawnguard during E3 this year.
