The only sign of life is that the dev is retweeting vore/monster girl stuff that he approves of about once every three months. I dont want to huff a whole cannister of copium here, but there is a dimension where the dev has been secretly working on the game and doesn't want to be bothered because it'll be done when its done. The dev was seriously pissed and insulted when Kredyn modified the game files ever-so-slightly, its safe to say that hes extremely protective of his work and also doesn't like dealing with his fanbase all that much.I would assume so, considering there were two retweets exactly one month ago (september 2nd, or at least that's when the original tweets were posted).
Still not a single sign of life towards the game, though.
Another dev that make a bi-annual appearance on X is SQDT, the maker of Succubus Quest and Succubus Academia, he hasn't made an update in ages and hes so detached from the community scene that it caused a six month delay in the release of the English version of the append to SA because he didn't contract that guy who did the English localization for that long.
Both of these devs make fantastic work, but they are extremely elusive and probably busy with real like obligations.