User blog comment:Thejoker2508/Grimmjaw: Dead or Alive/@comment-1194223-20111127174734

I'm not going to claim anything definite, since the bleach wiki mods will jump on me like always. I'll just say that, after Kubo's interview at Jump Festa, we are left to assume that Grimmjow died, or will never appear again. Kubo was speaking of him in past tense.