In case it was confusing for anyone else – Jupyter is the notebook software, and IPython is the kernel. The name change was to show Jupyter is capable of running more than just Python, and that it's no longer a monolithic project.
It's a Haskell kernel for Jupyter. The nomenclature is a bit outdated, with the title (and a few other places) referring to IPython when they mean Jupyter; this is because a few years back there was no such thing as Jupyter, and the entire thing was called IPython, so it was accurate to say that IHaskell was a kernel for IPython.
