'Death of the Doctor' is a modern -day classic for getting Katy Manning back as Jo. Her interactment with Lis and Matt was just perfect, or close to it as possible. So the only question I now have is-are they going to release thelast 3 stories Lis filmed before her untimely passing, or will Season 4 be it?
True, I will keep looking and hopefully some info will be announced before too long. I'd hate to see them just end it with the already released Season 4 which did have a brief onscreen In Memorium at the start.