The cast is busy. In fact, Hugh Bonneville has a slew of movies coming up, including Jingle Jangle and An Unquiet Life. Michelle Dockery is filming Defending Jacob, a new TV series. Other actors, including Brendan Coyle, Maggie Smith, Elizabeth McGovern, Allen Leech and more all have upcoming projects in the works as well.
Article source: https://www.cinemablend.com/news/2485928/why-making-a-downton-abbey-sequel-should-be-smoother-according-to-the-producer