After reports rumbled of spinning off the hit franchise under the Paramount umbrella following the Yellowstone finale, CBS officially ordered Y: Marshals, which will see flagship star Luke Grimes reprising his role as Kayce Dutton.

The son to the deceased John Dutton (Costner) was given a satisfactory yet open-ended season 5B finale ending when the Montana Livestock Commissioner finally figured out how to free himself of his father’s legacy while giving his own family a future. Wife Monica Dutton (Kelsey Asbille) has not been confirmed among the cast; but their son Tate (Brecken Merrill) also star in the series, along with Yellowstone stars Gil Birmingham and Mo Brings Plenty reprising their roles as Chief Rainwater and Mo, respectively. (The latter is the Native affairs coordinator on several series in the franchise.)
Logan Marshall-Green has joined the cast as newcomer Pete Calvin, a friend from Kayce’s military service, along with Arielle Kebbel, Ash Santos, Tatanka Means and Brett Cullen.
Y: Marshals will premiere on CBS in spring 2026 and, per the logline, will see Kayce joining an “elite unit of U.S. Marshals, combining his skills as a cowboy and Navy SEAL to bring range justice to Montana.”