A guy from NF is posting some cryptic spoiler of 618 (Evil, I know him. He's reliable about narutos spoiler. I can garantuee for him since I know him for years). He saying that it's a chapter about sasuke and he's going to meet 4 people... Probably the hokages themselfes...
I've said it before but I'm torn on switching to Sasuke right now, I really want to see the resolution of the war but I'm also really curious about Sasuke's journey. As much as I'm interested in his journey I don't really like Sasuke himself but I do like Taka and Orochimaru.
As a reader I don't want to leave the war on yet another cliffhanger but I can understand why Kishi would chose to switch now, it builds suspense and if I was a writer I would probably do the exact same thing.
If he does meet the previous Hokages, then that could be really interesting, the 3rd wasn't responsible but did have a hand in the Uchiha massacre and Itachi trusted him with Sasuke, but even more interesting is him possibly meeting Minato, his rivals father.
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My guess is it will be the first Hokage from each of the five villages.
That could be cool, none of the Kage's brought back in the war were the 1st of their village were they?