The dev and artist were both done with the game initially, from what I've read in the thread. The developer saw the feedback from the gym trainer dlc, corrected/fixed ( I think), and got demotivated to make more. That's when the smaller breast free update got released, and now the dev is making the bigger breast dlc that's going to cost money to get.
I think you can tell though that they had more plans, or may decide to continue. Floor 4 has no edicts and looks like it was rushed and definitely had more content, floor 3 has rooms it won't let you in that def look like they were planned. There's the infirmary that looks like it was unused/planned, and maybe the anatomy class thing as well.
Overall I just think the game became bigger then was planned.