Yellowstone, TV’s top-rated drama, may end in spectacular fashion. Deadline understands that Taylor Sheridan, co-creator and showrunner, Paramount Global and Paramount Network are moving to end their signature show in its current form. But they are plotting a potential franchise extension to continue the Dutton saga, a new show with Matthew McConaughey in talks to star. It is unclear which of the Yellowstone cast will move over to the McConaughey-led series, but it is expected to include several of the big stars. “We have no news to report. Kevin Costner is a big part of Yellowstone and we hope that’s...