i see it the same way as Afro there are so many things that have yet to be answered and i am sure there is a reason that the vasto lorde were mentioned. So yeah this well test his skills as a writer like Afro said.
The way i see it there won't be clear victor from this battle and so Aizen will retreat and be like it is not time for the final battle again like Afro said. However after this what i see happening is Aizen laying low for a while gathering Vasto Lordes and replacing the espada with new people. So ya i see a timeskip of some sort after this fight with about a year probably which will guve us time to adjust to a new Ichigo look lol. But ya timeskip but not the end of Bleach by any means and if Kubo wants to he can have Aizen go to hell and talk to the demon king or whomever and be like u wanna participate in plan to overthrow SS or something along those lines