User blog comment:Lia Schiffer/398: Back from Blind/@comment-452405-20100406012006

Remember Ichigo isn't the only guy who can get stronger, Kenpachi went from being defeated by Ichigo shikai to taking out 5th Espada cause he decided not to sit on his ass after being beaten and go get stronger. If Grimmjow doesn't turn up in this arc I can imagine a frame in the aftermath chapters where he is seen walking off into Heuco Mundo, alive but his intentions unknown leaving his fate a mystery.

Will he come back stronger? Or will he forge some sort of uneasy alliance with Soul Society. He may request a rematch with Ichigo after getting stronger seeing as Ichigo did promise he'd fight him whenever he wanted to.