That would be awesome, but I think they are going for something like Remote Play. The app would let you stream gameplay from your Xbox One to tour PC.
There is just no way a traditional PC gamer is going to pay to use any Xbox services when Steam is free... but, if you can extend Xbox One services to PC via streaming, that would be a great benefit to people with the system and would be a decent answer to Sony's remote play features.
Oh yeah, this would also be like something that I was expecting from Steam Machines. I had expected these machines to stream games from PC to TV similar to Nvidia Shield.







