Last I heard the main thing that's delaying the game is licensing for the music, if I remember correctly he wanted licenses that wouldn't expire and take the game (or part of its content) down with it. This was in a DD stream around April, but because he doesn't keep archives of his minor streams that's basically gone and I can't confirm that with a clip.
He's also working on a game awards video and "summer resort web game", the latter of which he posted a teaser for on
twitter [
archive].
DingDongVG - New password entry screen. [1796754409357025280].mp4
Optimistically, I feel like this is the year they'll actually release
something. But it's just as likely that they'll disappear from the Internet again and come back with a new project that they'll start and leave in development hell.