While the next Halo game still doesn’t have an official title today Microsoft posted a new video featuring the Xbox One’s design on both hardware and software fronts, and eagle-eyed Reddit user Fozzin spotted something definitely interesting, as showcased in the picture below.

As you can see the picture (captured at the 50 seconds mark in the video) features player “Pit Bear” playing Infinity Slayer Mode on the Haven map in Halo 5.

Of course this could be a placeholder or an oversight. Haven is a map in Halo 4, and the Infinity Slayer mode comes from the same game, but this is the very first time the game is called “Halo 5” in official material from Microsoft.

Whether this is a glimpse on the future and a hint to the fact that the next Halo game will be really called Halo 5 or not, we cannot know, but it’s definitely intriguing.

Below you can see the full video."

Source: http://www.dualshockers.com/2014/05/08/halo-5-spotted-in-official-xbox-video-from-microsoft/