http://www.polygon.com/2014/8/19/6045141/diablo-microsoft-resolution
In my opinion, the Xbox One should be running ALL games at 1080p and 60fps. It should be a requirement. If your game doesn't run at 1080p and 60fps...go back to the drawing table.
I'm so sick and tired of the console getting mediocre graphics settings while the PC gets the luxury of tuning the game to fit the gamer's needs. Consoles should get the same treatment.
Microsoft should have focused on a gaming console, instead of the all-in-one entertainment system. With Kinect being initially mandatory, they must have sacrificed better hardware for it, in order to achieve the 500$ price-point. They should have made Kinect 2.0, when the sales of the Xbox One proved itself. Just my opinion on that matter.
I'm also pretty sure, that every game (except maybe open world games) could run on 1080p and 60FPS on the Xbox One, but it would probably look less appealing, without AA, nice looking textures and whatnot. Would you be okay with that?
Eventually, the devs will find new ways/tricks to achieve 1080p/60FPS without problem. I mean, if Halo 4 could achieve those good looking graphics on such old hardware, you would think, they can pull that again on the Xbox One with newer hardware. Well, I hope they can.