Yes, currently there are early accesses on Patreon for high-level subscribers as a reward for their support.
Free access will continue until we are satisfied with the free version for everyone, in order to fully showcase the game's potential and its ability to interest people (or we'll release some final demo for Steam and Itch).
In the end, the game will be paid, a completed part of the game, and available on Steam, Itch, and other platforms where we can sell the finished game.
Upd.
Most likely, a version that updates at the mid-tier support level on Patreon will be sold here for a fixed price, but it won't be the same exclusive as early access for the high tier.