Not sure Disney is concerned about any timeline.
Original PVB sales started to members around Jan. 12. New sales started Feb 1. Resort opened April 1, 2015.
On top of those sale dates, DVD bungled the timeshare license in most states, to the point they couldn’t even talk on the phone about the resort to several potential buyers until some time in March. It was

to see the posts of people flying to WDW just to buy PVB.
We bought the first week they could sell in our state. We stayed early May of that year and there were a lot of issues. Things were bad enough that we vowed never to stay at a resort the first year.

we broke our own vow and have Island Tower booked on cash for opening days.