User blog comment:Lia Schiffer/414: Deicide 16/@comment-452405-20100802055214

Unless Aizen does die, and the big battle is to be between Ichigo and Gin, cause I just had the thought that maybe Gin could've been manipulating Aizen (pretending to work for him) and just watching to see if the Hogyoku can truely do what Aizen claims it can. So now that it seems it does, Gin no longer needed to follow Aizen, hence attempting to kill him and then taking the Hogyoku for himself and use it to realise his own inner most desire. (We only learn what his plans are as we see them become a reality)

Just a random theory, not saying its definitely going to happen.