The First Skyrim Expansion Wants to Know If You Are Pro- or Anti-Sun

Bethesda released the first full trailer for the first full Skyrim expansion pack today, titled Dawnguard. I’m still totally ignorant of the game, alas, but I think I’ve figured out three things about it:

? It’s about a group of sun-hating vampires fighting a group of sun-protecting dudes called the Dawnguard
? I think you can play as a vampire-type thing
? Dragons can now swim underwater
There’s probably more that experienced Skyrimmers can glean from the video, and hope you folks include your thoughts in the comments. Meanwhile, if you’ve wanted more Skyrim to play, have a very strong moral stand on the sun, or are a dragon who has desperately needed a bath, you should be in for a treat.