I honestly kind of feel like he probably got overwhelmed by the tech update and doesn't know how to finish it, his progress bar has been stuck for month and all he's releasing are wallpapers. At least they didn't stop making art for improving previous scenes.
I'm really hoping they manage to dig themselves out of that hole they've put themselves in, worst case they gonna have to scrap it and go back to update the old version of the game, which is always hard to do especially after you've invested a massive capital on it.