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.
And plenty of others: julia, ruby, js, coffescript, C#, R, F#, go, scala, erlang, exlixr, ocaml, forth, perl, php, octave, bash, powershell, clojure, mathmatica, lua, scheme, processing, brainfuck, prolog, lisp, tcl, c and even more.