The next game is out, but it's censored and in Japanese. KaguraGames is working on a translation. Here's what the author says about the next next game (MTL):
"As we've mentioned before, the next one will likely be modern and a continuation of the Celesphonian worldview. I think the game will be sexually in the same direction, with combat eroticism and map exploration. I think it will be similar in the direction of Ero, but I would like to make it more deeply packed with sexual habits. (Mainly for clothing and black tights.) My motivation is very high, but for the next work, I have assumed a reasonable scale from the beginning, and I would like to take a break to get in shape and prepare various things. The report of the start of production may be made a little later."