A new series, initially titled 'Y: Marshals' but possibly renamed to just 'Marshals', is part of the 'Yellowstone' franchise and will be the first in the series not written by its creator. The show has premiered on CBS, bringing large viewership to the network, and features a cast including Luke Grimes. Details about the series, including its plot and potential connections to the original 'Yellowstone' series, are emerging, with some outlets reviewing it as a procedural series.