I know how will Tobidara emerge last chapter.
- Fact #1! We know that shinobi can use transplants!
- Fact #2! We know that we have a lying body out there
...with two available arms.
- Reasoning: It's Madara's body. So, this is how Tobidara emerge! The true geniousity of lawd Madara will let him emerge once again from the ashes! He will emerge in both Naruto and Sasuke at the same time! And this will be the great Tobidara reveal, which curiously, doesn't have anything to do with Tobi!