Yeah, if you check out the dev's twitter account, you can see they post some teasers of the next update from time to time, but the development is going pretty slowly. I think it's not just because they also work on other projects but because they have to commission the art for the game from someone else, and they are expensive, so the dev has to save up and also wait for them to get done.We gonna get an update over here? It looks like they are working on this project (albeit at a slow pace, last update on progress being 44 days ago), despite also having like 4000000 other projects for some reason