In this Xbox One game montage video, there's a brief reference to Metal Gear Solid V: Ground Zeroes, which will have content exclusive to Microsoft's platform in addition to the exclusive Deja Vu mission for PlayStation 4 featuring Classic Snake.
Naturally, we haven't the slightest clue what the content for Xbox One will entail -- that'd be far too easy. Realistically, though, how much cooler than low-poly Snake can you get? Tough act to follow.
via destructoid http://www.destructoid.com/mgs-v-ground-zeroes-has-exclusive-xbox-one-content-too-266217.phtml