maybe there is another way to get the rinnegan and sasuke will get it because if what is true sasuke is a younger madara and madara is foreshadowing what sasuke will become without hashi D.N.A and Mokuton
I feel like since madara is over powered kishi will give sasuke the rinnegan but that should be sasukes last powerup also i think naruto is at his last power up to.
When sasuke and itachi was fighting itachi mentioned that the EMS would lead to another doujutsu (rinnegan) i think now that sasuke knows that he would try to set that as an goal to acheive