It's been a while since we posted an update on here! For the most part, we've been working on fixes and QoL issues, and taking a small vacation.
It's not 100% official yet, but from fan feedback, we've been thinking about making a big DLC pack for Fell Seal and we'll probably start work on that in a little bit. We'll have an announcement about it when it becomes official, but it's the most likely scenario!
There are a few threads on our Steam forums (Steam page) about the DLC, so feel free to send us your suggestions and ideas on there, or make your own thread, of course!