I don't have a specific date; the shift will hopefully happen sometime in December. Since you've gotten access to the Patreon version, you don't need to pay for it here. At some point, probably once I've started my next project, new patrons won't automatically get a key for the full game, but for now, Patreon is just an alternate way of getting access to the game. Patrons will continue to get new versions ahead of time, at least for a while.

So you're good!