Originally Posted by JAIF

Wtf, no, @both of you. What is it with you and the new Bleach filler arc anyway? Sure, it's nowhere near as good as any decent manga, but compared to stuff we've suffered lately in Bleach and Naruto, it's pretty satisfactory for filler.

And of course the flashbacks are canon. They are written by Tite Kubo, in the official Bleach manga. What more do you want?