All I can see is people saying they have seen or read the interview so its still up in the air. I do know the on the Narutopedia it ranks naruto's jutsu (Ninjutsu, Taijutsu, Genjutsu) By parts and it has a Part 1, Part 2, and a Part 3.
I dont know how they classify those parts but i see it as Naruto was part 1, Shippuden is Part 2 and maybe Akkipudden is part 3.
Just a guess on my part but it seems like the war and fights with sasuke and madara are the last major arc of shippuden so that stills doesnt answer if Naruto becomes Hokage. And how much him saying he wont die till it happens i dont see how they can end with out him becoming hokage. Just a thought