During an interview with AusGamers, Microsoft Studios VP, Phil Spencer, talked about cross-platform play between the Xbox One and PC, where he said that it "made a lot of sense."
Spencer continued, adding that a "connected ecosystem" across a giant variety of devices is what he considers "the future of gaming." He also teased some more, saying "I'm not allowed to leak things, but I think what you're talking about makes a lot of sense." We've seen cross-platform play from Microsoft before, with the short lived Shadowrun. The cross-platform multiplayer title that launched on the Xbox 360 and PC in 2007, where Microsoft "learnt a lot from" the game.
The Microsoft Studios VP bought up some examples, using Skulls of the Shogun and Halo 4, where he said: "This connected ecosystem across all the different devices is definitely where I think the future of gaming is going. You don't have to do it as a developer, but you have the capability and I think a system like Xbox Live across all those screens where you know who someone is and who their friends are, what their Achievements are and their progression is really critical to that."