Ultimate Chicken Horse is hitting Switch in early 2018. While we wait for the game's release, the dev team has taken to Reddit to field some questions. They're commenting on all kinds of topics, but below you can see their response on whether the game will have more content added to it in the future.
We are going to continue to support the game. We have our own ideas about what should be done, but we also really like listening and watching the community to figure out what to do next. After the holidays we are going to have some planning sessions and digest how the update went and figure out what to do next.