I've just spoken to the reservations manager and asked a few questions such as whether this is a promotion or if it's ongoing. She said that as long as there is availability for WVs we can book them with points at the current rate(s), i.e; 95K/N or 76K/N with 5th Night Free. My guess is that if it gets too out of hand they will pull WVs from the 95K/N availability pool but that's only a guess. Second, there are specific upgrade rates for WV > other OWV categories (presumably the rates that they have been using all along) but since those are not published on the wiki and aren't common knowledge I've asked her for both low and high season rates. As soon as I receive the email I will post them here.