User blog comment:Xilinoc/Ch. 572 (inb4 "Kenpachi doesn't have Shikai")/@comment-29183117-20140312135735

Yeah, I really doubt those two are dead permanently. This new guy's powers might just make it seem that way, but I don't see Kubo killing off two captains like that. This wouldn't be the first time someone who was stated to be dead turned out to be alive (ie, Byakuya), so I think the best idea would be to wait and see instead of going "OMGKUBOYOUBASTARDWHATAREYOUDOING". The way this arc is progressing, not everything may be as it seems.