Have been checking the Orange County Comptroller site for whether the required documents have been filed yet, either (a) an amendment to the existing Poly declarations if the new Poly is part of the old Poly DVC, which now appears likely; or (b) new Declarations if the new Poly is its own DVC Resort.
So far, I have seen no such filings. Until that is done, there can be no sales. In the past for a new resort or new building add-on to a resort, sales have usually started about 30 days after such filing.