yeah no real new content is planned but they are working a new game
bc on ci-en they says:
Thank you for your help. This is huu from development room 404.
『Thank you very much to everyone who purchased Monster Girl Town 』 and to all the fans who support us!
We are truly grateful for the response and sales that exceeded our expectations.
We are currently working on bug fixes
In addition, we are also planning to add a high difficulty stage.
However, due to the small capacity of my brain, I am having some difficulties
If we have a release date, we plan to add it as a free update!