Finally, the Xbox One will have proper background music support. Also coming this summer is a new Clubs feature (like a Forza Club, or a Gears club). If that sounds too general, there will also be Groups (say for doing a Destiny raid). There will also be Arena, which is for competitive gaming.
In a seperate announcement, the online 'Minecraft' is being combined across devices and platforms. So that means iPad, Surface, Oculus, Xbox One, etc.
'FIFA' will, at some point, be featured in Arena.