While official ultrawide support for Starfield has not been confirmed yet, it is highly likely the game will support 21:9 monitors. Recent Bethesda titles like Fallout 76, Doom Eternal, and Deathloop had excellent ultrawide implementation. Given Starfield's emphasis on PC gaming and immersion, lacking ultrawide support would be surprising. Just make sure your graphics card can handle the extra pixels of an ultrawide monitor to maintain smooth frame rates in Starfield.