No need to break the NDA, Just a simple yes or no.

Does Dawnguard include tons of new Outfit/Armor?

Do you think they are better than Vanilla Skyrim Outfit/Armor?

This DLC has new armor, yes. It's not breaking the NDA, you can view a few of them by simply watching the trailer.

I certainly favor the look of some pieces over vanilla ones.

is there any new unanchanted robes for vampires as cool as the hooded black robe?