Forza Horizon 3 4K
Microsoft informed everyone today that Forza Horizon 3 now has Xbox One X enhancements ready to download and install. This free update, available to everyone playing the game on the Xbox One X, increases the resolution to 4K and adds in some additional visual improvements. Alongside the 4K resolution bump, the game incorporates 4xMSAA! The image quality is absolutely insane already but that's not all. Some of these smaller improvements include better car reflections, higher quality shadows, and improved texture detail for the terrain.

From what I understand, while the visuals gain a significant boost especially when it comes to the resolution, Forza Horizon 3 runs at just 30FPS on the Xbox One X. However, that's a solid 30FPS according to the latest video from Digital Foundry.