I'm one of the JupyterGIS maintainers. Quickest way to see what this release is about - this is a story map built with it, and it's the announcement itself: https://notebook.link/@martinRenou/jupytergis-announcement

Originally I was going to comment that there's no need for a blog when you've got this nice notebook format, but having clicked your link I can see why you have both -- it takes forever to load the notebook. Are you hoping to get that load time down in the future? It would be nice to do away with the markdown blog entirely.

If anyone is on mobile, that site chews through data in no time.

That's quite impressive!