Every four months, a new public build will be released. The game however is not nearly close to be completed. If you want monthly builds, you can check them over on Patreon by becoming a Tier 2+ patron there.
Sadly I can't give a date for the full version of the game, what I can say to you for now is this:
The speed this game will be completed depends solely on the direct support this game gets on Patreon.
And of course, keep checking for updates here, both on new builds (there's a date for the next build to be released here) and on new posts. I'll be creating small posts here to warn people of new Patreon builds releases too, since those are released monthly.
I'm glad you enjoyed the game that much, and I hope you liked the content so far! Thank you so much for playing.