Naruto's Full Nine Tails Form

[ANBU Kakashi23]

^ This. And I think Sasuke is somehow going to get the Rinnegan. It would make sense to give Sasuke the Rinnegan to level him with Naruto now but how is he going to obtain it?.

madara will probably clue us in to it at some point

 

[Stark]

BIJUU mode would be Naruto transforming into Kurama