rs_oakford In fact, I have discovered that ONLY content from H5P.com can be embedded into OneNote. You can create content on H5P enabled sites, that is your own WordPress or Drupal site with the H5P plugin enabled. However, that content cannot be embedded into OneNote. It will cost you a fee to have your content hosted on H5P.com. The author based license (1 to 3 authors) costs $570 per year. That is not a trivial amount. There are also Enterprise licenses available for Educational Institutions. See H5P.com price information
That negates the integration for me currently with OneNote. No ways I'm going to spend that amount of money for something I'm still experimenting with. It dampens my initial enthusiasm on the announcement.