The first trailer for the upcoming Skyrim DLC, Dawnguard, finally sheds a little light on what we can expect from the new content.

What is the first thing that comes to mind when you hear the phrase, "Dawnguard"? Is it vampire-hunting? If it is, then you might already know what to expect. From the looks of it, the upcoming expansion will feature a story-arc involving vampires, the Elder Scrolls, and a plan to block out the sun.

Mechanically, it looks like becoming a vampire will give you more than just a taste for blood , expect a full-blown transformation to be part of the package. The trailer also shows enemies that turn into bats, vampire-giants, crossbows, and more.

Skyrim: Dawnguard will be a timed Xbox 360 exclusive: Bethesda promises that the "expansion" will offer more content than your standard DLC, which explains the game's hefty 1600 MS Point price-tag.

The sun goes down in Skyrim this summer on Xbox 360. The release date for the PS3 and PC versions is still up in the air. We'll be checking out Dawnguard at E3 next week, so keep your eyes peeled for more details.