Posted: 8/21/20 at 5:55pm
Series 4 debuts November 15, 2020. With two more series to be produced. Trailer does seem to focus a lot on Diana and the introduction of Thatcher.
https://www.youtube.com/watch?v=Y4nEquUuKz0
"I hope your Fanny is bigger than my Peter."
Mary Martin to Ezio Pinza opening night of Fanny.