Manga News: Check out this week's new manga (2/23/15 - 3/1/15).
! Visit the new forums for Tokyo Ghoul and The Gamer!
Forum News: Vote in the final phase of the Anime Awards 2014
It's not going to be cannon, it's going to be stuff that Kubo had on paper but didn't had time to show it on the manga, like the bounts, the 2nd filler and the Zampakutou fillers.
I think it's cool.