Although this would cause an entire uproar from fans, I have a strong feeling that Sasuke Uchiha will not get out of this war alive. Pretty much, it's already be foreshadowed by Kishimoto that Sasuke will somehow be put down during this war. Whether it be intervening an attack from Kaguya to save his comrades (Naruto...) or receive a blow which would be beyond the point of saving.
In Chapter 680, Sasuke reminds Naruto that in order to finally seal Kaguya and end the war, they will need to use their full potential and manage to survive, not allowing anyone to be an interruption (Kakashi and Sakura). Naruto understands, however notes that his