Looking at their Patreon page, it looks like they are only offering their old prologue version here. Newer versions seem to only be available on Patrion for at least $10 a month.
True, but the language you're using on Patrion differentiating the $5 and $10 tiers explicitly states that the $5 tier only gets version 0.1 and higher tiers get the latest version. Also, this page states "by buying the game you only get access to one game version! You won't get any future updates." So, my information is still valid regardless of when it was released.