I can't wait to see what's under Tobi's mask! Also, I was pleasantly surprised in this chapter as Kurama got really irritated (loved how he watched Tobi with such annoyance!) ) and how he really stood up for Naruto. My bet is Tobi's either Obito Uchiha or someone completely different from the Uchiha clan! I mean there are only a couple of Uchihas that could possibly be him...
Anyways, super review!