Kate theory was really good and even give me back a little faith in the series but I don't believe kishi has enough balls to make this happen, but I still believe sp can change the ending, I'm not saying they are going to "kill" the last gaiden burrito movie and everything after the ending, they can keep the actual ending as canon but just give an alternative version of ending to ns fans
This is the only way they can make everyone (ss nh ns fans) happy with naruto again but I'm not going to raise my hopes because I know the possibility of this happening are 1 from 1000
I believe ns still has 7% of chance of happening