Well Kal said "a few days" 13 days ago and Dr.Muramasa said no ETA recently sooo.. feck knows.. I am waiting for it to, I do not want to start my solo love route until there is a stable release. I can only guess with a lot of people complaining about the game not working on Linux and Mac since updating the version of Unity that Kal wants to address this (maybe just guessing.) He is also famous for getting distracted and adding in additional new content when he is supposed to be fixing bugs... 😅
Quick Answer - Dunno, hopefully soon...