User blog comment:Xilinoc/Ch. 616 - Mimihagi-sama/@comment-24031741-20150219195423/@comment-24384892-20150220031448

Doesn't Aizen still have his shinigami powers? His zanpakutou fused with him and its sword form disappeared, but its powers still lie inside of Aizen. I don't think Aizen ever lost his shinigami powers. They might be weakened now, though.