Arnold Schwarzenegger has expressed interest in joining the Yellowstone franchise, impressed by creator Taylor Sheridan's work and the show's phenomenal cast. With Kevin Costner leaving Yellowstone after season 5 part 2, the future of the franchise is uncertain, but McConaughey's upcoming sequel show and other potential spinoffs offer opportunities for new stars to join. The 6666 spinoff set in Texas may be a good chance for Schwarzenegger to enter the universe without having to cling to the Dutton name. There is ample room to explore the Dutton family history and even pick up a starring role along the way.