The dev returned on Patreon.
Yeah but all the posts are locked behind the paywall and the whole thing is otherwise empty. We still don't know what's going on, whether they're coming back to this game or not.
From the banner on the Patreon page, though, it seems the game is being remade in DAZ instead of HS2, which I'm sad about. I *really* don't like DAZ's visuals.