I wouldn't even want to be a werewolf in the game, similar to how I never wanted to be a vampire in Oblivion.
I'm pretty sure they will be the last "big reveal", I mean if they weren't in the game they wouldn't just give their little "eye-wink" "We can't answer that question" response everytime someone asks, they would just flat-out say no, like all the other times (spears etc.). I guess they could just be leading everyone on to keep the hype going?
Which leads me back to my main point, why the hype?