The ultimate battle has begun! Because of Hagoromo (Legendary Sage of the Six Paths) Naruto has acquired the power Sage of the Sixth Paths and Sasuke has Rennigan version 2 which is an all red eye with 6 swirls on each line.
Uchiha Madara also has the power the Six Paths because of his absorption of all the 9 Bijuu and also contains the Rennigan. After absorbing the Great Tree which I believe is Kaguya (who has 3 eyes, one being on the forehead), Madara has received an ultimate power boost. Without it, he would have been killed by Naruto. Does his absorbing of Kaguya mean he may potentially become possessed? Will Orochimaru stop playing possum and take over Sasuke’s body and end of fighting Naruto?
All those answers will be made as the final manga issues wine down.