Talked to our guide about this very question this past January...he told us the sales center is not moving from SSR, and that Disney is building a "virtual" AKV in the Theatre building...complete w/"virtual views" of the savannas/savannahs (did we ever resolve the debate about how to spell that word???)...
The "virtual center" sounds really awesome...we told Tim (our guide) that altho our add-on would be at SSR (I absolutely love SSR), he "had to" take us on an AKV sales tour at the virtual sales center at the theatre...he promised he would, but said he didn't know when it would open (this was early January...maybe 1/7?)...
Of course, all Disney plans are subject to change...but that's what our guide told us just about one month ago...