jupyterlite 0.1.0a19 is out. This is an upstream-focused release, with new versions of JupyterLab & RetroLab as well as an interesting new version of pyodide which is interesting in its own right.
Of course, at basically the exact same time, IPython 8.0.0 also came out, and we haven’t tested it out in the browser yet. 
Stay tuned for more stuff in 2022!