Ok so there's been some debate on wether or not Skyrim would have any Werewolves and I don't want to give it all away, but go see the Companions and do some quests for them and you'll see for yourselves...
There is some talk walking around the towns of it too if you listen to some conversations. The side chatter is so much better than oblivion i heard vampires talking of their need to "feed" cause of the thirst effin great game
Yes it really is a great game (at least so far). I really like how Bethesda has build a whole narrative around becoming a werewolf and what it entails for a traditional sovengarde believing nord. Do you know if there is a quest(line) that involves becoming a vampire.
There is information on G4 tv The feed regarding vampire guide. Im trying to avoid reading it due to not wanting to spoil anything, espcially since im soon gonna have my back up non-vamp save file soon, but check it out if ur interested.