Kevin Costner begins production on the second part of Horizon, the Western that reportedly delayed Yellowstone season 5. Created by Taylor Sheridan, the neo-Western TV series Yellowstone became a breakout hit for Paramount+, launching an entire universe that includes the Harrison Ford-led prequel series 1923. Recently however, the Yellowstone drama shifted from the screen to behind-the-scenes, when it was reported that the second half of season 5 might not arrive in summer 2023 as planned, due to star Costner’s commitment to directing his own four-movie Western epic Horizon.
https://screenrant.com/horizon-movie-kevin-costner-production-development-updates/