Free public version will come out 2 weeks after Patreon release, so it will be published on Itch.io around early July. I'll post the final release dates this weekend!
Is there any chance at all that you could maybe release the free version a week after the Patreon release, instead of 2, maybe even earlier than that, since it's the final bit of the game? You would reach God status if you did, at least for me.
Also, will you provide the complete walkthrough for the game at the time of release?