1923 will run for two seasons, but another Yellowstone spinoff dubbed 1944 is already confirmed. Almost nothing is known about 1944, including who will star, and that likely won’t change until 1923’s second season is finished. That said, since Spencer is all but assured to live, it’s easy to see him being in charge of the ranch. Given the year it’s set, 1944 will probably explore the impact of the Second World War on the country, and maybe one of Spencer’s own children went to war as he did.