Board Thread:General Discussion/@comment-37675682-20190727155103/@comment-34593282-20191031075616

Yeah, it's canon. Unfortunately whenever a person has this question, someone (Always the same person) posts a link about "Bleach Wiki: Canon Policy" that means absolutely nothing (Since the Wiki isn't owned by Shonen Jump or Tite Kubo, so they don't consider canon has no value) and then locks the topic preventing anyone else from being able to answer more clearly about it (which sounds like a kind of censorship).

The vast majority of other Bleach groups like Reddit are far more open about this subject and generally consider the novels canon as they answers many open questions and the manga is unlikely to continue.