Well, it is over.
Cortana is dead.
In February, Microsoft killed third party skills. Though you can skill invoke the bots, the interface from Windows or Invoke is dead.
So the question is ... now what. Relaunch the skills I have as plug ins for Teams chat? Or just wait... continue to build on Google Actions.
Update: I spent 5 minutes and hooked the bot webchat to the Art of War and Mediations pages. So... at least you can still see the botframework part in action!