I don't remember exactly... but I know last year we booked S/P/D when it opened up to Disney Visa holders. I think that was sometime in the first week of October. My dad then received a FD PIN and we were able to switch both rooms to FD at French Quarter. I think that may have still been in October even.
So for us, the PIN came after S/P/D.... but I can't remember if others were already getting PINS earlier, and my dad's just came later.
Sorry... not much help!