I would not be lining up my U-Haul in FL based on the news release, though I live close to the general site and the city has a great reputation for getting deals done. Information of plans for a 36-hole facility has been pretty well controlled for the past several years, with a regional golf organization rumored as the principal.
A good source states that it is more likely that the PGA is simply turning up the heat on Palm Beach Gardens to open up its purse. With a well-proven relocation destination, I suspect that the PGA will come out a winner, whether it stays or moves.
BTW, Toyota completed its move from the L.A. area to the north border of Plano and Frisco in 2017. 75% of its employees made the move (3000), a much higher rate than the company expected. The PGA move would be much smaller and the climate for much of the year is not that much different. Owning its golf courses and other amenities on interesting land adjoining its headquarters might be an important factor, along with being :30 from the centrally located 4th busiest airport in the country.