Ybarra said they have to be smart in how they implement it and leave a lot of choice up to developers.
During a panel at PAX West, Corporate Vice President Mike Ybarra was asked about the inclusion of mouse and keyboard support on the Xbox One console, and whether or not gamers could expect the first titles that support these input methods anytime soon.
Aim assist be damned, keyboard and mouse support is coming.
So a lot of people they tweet me and they say that you can't do this because of fairness; and we understand that we run two platforms - Windows and Xbox. "We're gonna make as many Xbox One Xs as we can make", recently shared Xbox Marketing Chief Aaron Greenberg, adding that "All the signs are that it's gonna be the number one hit product of this Holiday, so we're gonna keep up with demand the best that we can". In the case of a competitive multiplayer game, Microsoft will encourage devs to offer gamers the option of playing with other keyboard and mouse users or only those that use a controller (or, if you're feeling adventurous, anyone). The other feature is on "the list of things we need to get to", meaning that it doesn't seem to be in development at the moment.
Microsoft already pits controller players versus keyboard and mouse players in Gears of War 4 via cross-platform play, but keyboard and mouse players are now restricted to PC.
Ybarra ends the question by saying that support for the devices will be coming soon.
Using a keyboard and mouse on console is often seen as an unfair advantage, particularly in competitive games. I can't announce when that is, but soon.
Microsoft official announcement revealed, "The console brings a range of improvements upon the standard Xbox One, mostly visual, with the promise of running enhanced games as high as the 4K resolution at 60 frames per second (FPS)".