https://www.polygon.com/2018/8/21/17764302/halo-master-chief-collection-xbox-game-pass-4k-hdr

Halo: The Master Chief Collection, the Xbox One package of the first four Halo games, will join the Xbox Game Pass library on Sept. 1, publisher Microsoft Studios announced Tuesday during its Gamescom episode of Inside Xbox.

The Master Chief Collection’s Xbox Game Pass debut will coincide with the release of a massive, long-awaited update that will deliver a variety of fixes and new features to the game. First up on the list is visual upgrades for Xbox One X owners, including “up to” 4K resolution and HDR color, according to a new trailer that you can see above. Microsoft has not provided details on game-by-game support for those graphical features; we’ve asked the company for specifics, and we’ll update this article with any information we receive.