The Last: Naruto The Movie (teaser) hints

[Floydical]

Naruto movies are never canon, they can't be by definition. Kishi may write the story, like he did Road to Ninja, but its simply not canon.

 

[pepitoisback]

I have a feeling that once this battle ends Naruto will lose the yang seal, the bijou including Kurt ma with absolutely no trace left and the six paths senjutsu and will revert back to his regular base self along with the regular sage mode.
Sasuke will lose his Yin seal, the chakra boost he got from Hashirama as well as the power he got from Kabuto pumping him with Hashirama's cells along with the tomoed Rinnegan and will revert back to his EMS state
As for the bandages, just like the respectable person above me said it's probably due to him practing a new Rasengan or something

This would actually allow for some development. They could maybe reach Sage power again but this time on their own, not by miraculously getting a power up from the sage himself).