Yes, there will always be a public version available for download, which will be updated from time to time. This way people can play the game and decide if they like it or not.
Those who support the game on patreon or subscribestar will always have access to the latest version of the game.
Currently v0.2.0 is already public for all, v0.3.1 is available for 5$ patrons/subscribers and v0.4.0 is in the making.
I would be happy to welcome you as an active supporter and provide you with the latest info and game updates!