https://www.gamespot.com/articles/forza-horizon-3-joins-the-xbox-one-x-enhanced-list/1100-6456101/

Xbox One X promised to bring even more beautiful graphics to your favorite games, and it's been delivering. With over 100 titles and counting, Forza Horizon 3's update has joined the ranks, and is available now.

Microsoft says the update allows you to play Horizon 3 in "native 4K," including the Hot Wheels and Blizzard Mountain expansions. The patch contains a bunch of visual enhancements for Xbox One X, from "improved car reflections and shadow resolutions" to "improved texture detail for road and terrain surfaces" and more.