I think we need to keep in mind that just because Jamie is out it doesn't mean the conservatorship will end. I doubt it ever will. But this will mean that the conservatorship will more than likely solely be there just to finance Britney's money with Bessemer Trust having full control.
I can honestly see a new album and maybe another tour to go with it. We all know how Brit loves to write and be creative. This would be the first time she'd have full control over a project in so long. I can imagine she'd take her time with it but i think it's something she'd really want to do.