I don't know if it's that doubtfull. It just won't be team 'Kakashi', just team 7 (Naruto, Sasuke, Sakura). After all, every Shinobi has got to outgrow the protection of the squad leader and take their own route, but, well, it could not happen. Lately the Naruto plot hasn't been that exiting until the latest chapter, but it did have some twists in the story, so our speculation might not just be up - to date with the creators imagination or should I say, destionation.
Anyhow, putting that aside, what 'confuses' me, is a Pain character calling another Pein character "Nagato". But, Nagato was suppostly to be the 4th Hokage, Naruto's father.
So, would that mean that Nagato is somehow behind the attack, for some specific, unknow reason? Or is it just because appearently, the major attack on Konoha by the Nine Tailed Beast, Kyuubi, the Bijuu really was controlled A.K.A planed by a certain someone and while Nagato saved the village, he might realized that he did a mistake for a certain reason and had decided to come back and 'fix' what he had 'done'? Yet again, that would be quite questionable, since the well known Yondaime died while sealing the Bijuu into his son, Naruto.
Well, I really dunno, it's very possibble that I'm heading in the wrong direction, but thinking yet again, I might not be, quite.