User blog comment:Xilinoc/Ch. 594 (something something ech)/@comment-24306779-20140828192347

I'm convinced that all four Shinigami are alive.

Toshiro was made into a zombie without being killed since it's more effective that way so he's still alive.

Rangiku was also alive so she's likely in the same situation as Hitsugaya.

Gremmy said he had killed Rose and Kensei and Isane confirms it, however we know everything Gremmy imagines becomes real as long as he keeps focusing on it. I think that the two captains stopped being dead after Gremmy stopped imagining them dead in the same way as Yachiru's bones stopped being made of cookies after Gremmy stopped imagining them that way.

(it wouldn't make sense that they were killed after becoming zombies since that would negate the advantage of making them zombies while alive)