This project has been developing quietly in the background, but there's finally a new build available for free! You can try the first three worlds here: https://www.newgrounds.com/portal/view/796886
This version has new content (a new world with new scenes), additions to old content, and some significant improvements to the core gameplay. I can't say exactly when the full game will be released, but we hope to move out of mechanic testing to production on the remainder of the worlds soon.
This version is everything that's been done so far (the complete first two worlds of the game), featuring four unique CGs. I'm hoping to get feedback on the base gameplay before we begin work in earnest on the final version.