Dev hasn't logged on here or made a new Patreon post since May when he said version 0.1 would come out at the end of June. He might show up again at some point, but it's looking pretty unlikely considering that was going to be the first real version of the game and one of the things he said about it was: "hope that it gets enough sponsors to keep it going after that".
It's unfortunate because I'm always happy to see incest games with more interesting plots than the usual school setting slice of life...