I would also like to hear an update on this.
Back in February, @jprint made a very good list of critical problems with MarginNote, and asked for some feedback from the development team. As far as I can tell, there has been no answer to his query.
Also, I thought work was in-progress to provide more information about the new automation and extension API, but I haven’t seen any followup.
What is the current status of these issues?
A detailed response would be appreciated, thank you.