Re: 515 prediction/ spoiler
Yeah. It isn't much of a cliffhanger to break on. I think Numinous pinned it with the Sasuke eye redesign giving Kishi problems. Given its anticipation and fan drooling over its potential, Kishi has probably been working non-stop on it... which could explain the previous few chapters.
By the way, I still think my 526 prediction is pretty good for when we'll see it.