At E3 this year, Microsoft announced their Xbox Anywhere initiative, an ambitious cross play program that will put all Microsoft games on Xbox One and on Windows 10, allowing for cross compatibility between the two versions- to the extent that buying one version nets you the other, to the extent that your progress and Achievements across both versions are synched, to the extent that both versions will seamlessly interact with one another.
So, when Halo 6 is eventually released? It will be on PC. Ditto with Forza 7. Ditto with any other Microsoft game you might care to think of. Now if only Microsoft would go back and release some older Xbox One games like Sunset Overdrive and Halo 5 on PC, too…
Source: Rheena.com