The Testaments also rounds out its cast with 9 new actors: Mabel Li, Amy Seimetz, Brad Alexander, Zarrin Darnell-Martin, Eva Foote, Isolde Ardies, Shechinah Mpumlwana, Birva Pandya, and Kira Guloien.

Hulu announced that it is developing a series based on Margaret Atwood's 2019 novel "The Testaments," which is a follow-up to "The Handmaid's Tale."

"The Handmaid's Tale" is officially getting a sequel series: "The Testaments," starring Ann Dowd and executive produced by Elisabeth Moss.