Yes, we certainly want to support a lot more languages in the future and it should be relatively easy to do as long as there's a Jupyter kernel (which is a lot)

Yes, we certainly want to support a lot more languages in the future and it should be relatively easy to do as long as there's a Jupyter kernel (which is a lot). We also have a proof-of-concept PR where you can implement a runtime in a notebook. I think we'll expand the available languages as soon as we're confident the core product really solid.