My curmudgeon take. Grand Floridian has lost some of its luster and they're having trouble filling the rooms. The shiny new Skyliner is pushing people to want to stay at Rivera/Art of Animation and enjoy quick access to TWO parks and their new IP attractions (hello Galaxy's Edge, Guardian's of the Galaxy, Ratatouille and Frozen). I don't think they care if they sell out Rivera anytime soon. What they're getting per night on the cash side is astonishing.
Disney also wants to cut costs because of housekeeping ($17 per hour starting pay) and rising maintenance expenses (GF was built in the 80's), so they're converting it to
DVC.
They're going to have to move millions of points, and from what we've seen, this is going to be a fast turnaround (otherwise known as cheap flip). I think they'll price it very similar to Rivera and maybe even lower with bonuses, add-on and minimum incentives.
Edit: Nabas beat me to it!