Board Thread:FAQ Board/@comment-6697950-20150424092122/@comment-26452564-20160717194610

ZeHaffen wrote: Another option here is that they plan to release the arc as a single, massive season like what was done with Fullmetal Alchemist: Brotherhood. If that's the case then it's only natural that they have to wait for the conclusion of the arc before animating it. Perhaps they've already got a lot of work done on it, but they can't finish it yet because there is no conclusion yet.

Thats possible too. We should just be happy though that they are taking their time as it means their putting in more effort into it.