According to reports, the original casts of the movie like Maggie Smith, Elizabeth McGovern, Hugh Bonneville, Michelle Dockery, Laura Charmichael, and Carter will be reprising their respective roles.
"Because we loved doing it so much, [when we wrapped] it was definitely that feeling like, Oh, we could do this again, and it would be wonderful to all get back together," English actress Dockery, who portrays Lady Mary, previously told Harper's Bazaar.
Likewise, actress Joanne Froggatt, who plays Anna Bates, shared her excitement for the sequel with the publication, saying, "I think this story can be never ending when you've got that many different characters, personalities, relationships—whether they be romantic or friendships or feuds."
In addition, new characters are to be introduced in the new era as Hugh Dancy, Nathalie Baye, Laura Haddock, and Dominic West are set to join the cast.