Skyrim: Dawnguard Game Informer Information
Heres the Dawnguard info i got from gameinformer:
•"Story of dawnguard involves the return of a vampire lord named Harkon,who seeks to put stop to his greatest enemy: The sun."
•You choose sides:fight alongside the dawnguard(vamp hunters) or join harkon,"alot of unique content depending on which side you choose"
•Two new homes,one for each side of the conflict.
•If you choose to side with harkon you can become a 'Vampire Lord',grants you new powers,players can exit vampire lord form at will.
•Vampire lords & werewolves now have their own perk tree.
•Legendary dragons are new high level beasts,Gargoyles,death hounds and armored trolls.
•Crossbows being added
•Some quests will take you into the oblivion realm,specifically 'the soul cairn' the realm of trapped souls
•you can change your face/gender via a character in riften's ratway.
•New shouts like 'soul tear',where you steal the soul of a dead enemy and use it as a minion.