I call fake for 2 reasons:
1) Notice how the screen seems to be sunk in from the bezel (black border varies based on perspective)? That happens when the screen isn't fused with the glass (like it is on the iPhone 5 and 5s) and I don't think Apple would go back a step in technology.
2) On the box, the icons don't have any more spacing between them versus the current gen. That means that either the display resolution is the same (unlikely) or Apple will require a new size of icon assets from devs (I hope not...).