Zack Sharf Digital News Director “Yellowstone” is currently in production on its final episodes without previous star Kevin Costner, although the Oscar winner continues to double down on his apparent openness to returning as John Dutton. Appearing on “Today” to promote his upcoming movie “Horizon,” Costner once again said he would love to return for the second half of “Yellowstone” Season 5. “I’ve supported that thing and I’ve loved it,” Costner said.