Board Thread:Questions and Answers/@comment-781443-20140903163620/@comment-5398287-20140903173135

As far as we know, there are no plans to bring it back. To be honest, it's been discussed to death and back by now, and we know nothing for certain about why it was cancelled, although the huge amount of filler and random crap Pierrot threw into and pulled out of the canon episodes are likely contributing factors.

If it were to come back, I'd say it should do so after the series is over so we don't have to go into filler from the anime catching up to the manga as it did so many times before.