For the version numbers, I think the dev also uses letters to denote a minor version without changing the 3rd number.
Anyways, the version I downloaded in November had major performance issues on my machine. I have an Intel i9-10850K and an Nvidia RTX 3080 Ti and this game was using over half my VRAM and GPU utilization. I didn't expect it would tax my machine as much as it did for a game that isn't moving through a full 3D world all the time.
The developer said they would be looking into the performance issues I was having.
It would also be nice if some basic sex sim stuff could be working sooner than the story [like the buttons for different sex styles].