Okay a few questions:

1: Can someone give me a list of what was added in Dawnguard?

2: I don't know, but a article I read on Dawnguard from E3 or something said there was a per for Werewolves that allowed you to keep eqipment or something. Is thisx true and i just can;'t see it, a rumor, or true but removed?

Ton of armors..weapons a new appearance for the Volkihar Vampires.

Now there are red and black eyed vanilla skyrim vampires and glowing gold/amber eyed Volkihar gaunt faced..more dead looking vampires that unlike the lesser vanilla skyrim vampires can turn into the Vampire Lord form.

Oh and crossbows and a corrupter of men that as soon as you see her will corrupt you and before you know what happened she'll already have her fangs in your neck or her father's fangs will be in your neck, either or. =P