A new 2-part 'Yellowstone' spin-off has reportedly become a top show, with some outlets suggesting it is the number one show in the world. The spin-off, which is part of the 'Yellowstone' franchise created by Taylor Sheridan, has been renewed for a second season. Details about the show, including its cast and release dates, are available, although the specific title of the spin-off appears to be unclear, with different outlets referring to it by different names.