We've always had a backer release on our Patreon. We just offered that here for the same tier price you'd pay on Patreon.
The public version is the free demo this is the version that normally would be uploaded here by itself. Which is 0.47.
The only thing that has changed is that we now offer the once patreon-exclusive build here.
Hello,
The difference is the public version is one version behind the backer version.
The backer version will update very two months as we develop the game while the public version will only update every 6 months. In 6 months the contents of the backer version will be included in the free version.
However, we are on track to finish polishing up the first half of the game and releasing a final public build by the end of this year or sometime into next year.