I to think he will return but reborn at the same time. I think he'll still be an espada and still wear his number 4 rank but I think with Orihime he will be reborn. This is Kubo's way of redeeming Ulquiorra, which is something we fans have been saying all along. His role isn't done yet we still haven't seen Orihime's POV nor Ichigo's. Just by looking at the panels it's all too open still for his return.