I'm posting this here because I don't want to get banned at neogaf or downvoted to hell on reddit.
Rumor: Both Xbox One and PS4 will require a camera for their virtual reality headsets to do body tracking (position in the room).
Xbox One: Already comes with the kinect camera that has infrared cameras on it and the controllers also have infrared lights.
PS4: Camera does not have these capabilities but they can track the controllers with the lights on them, that's why they refuse to turn off the controllers on the lights with firmware because they need them in the near future. So you will either need to buy the current ps4 camera (if it works with the VR headset) or buy a new upgraded more expensive model just to do the same thing the kinect camera already does.
These headsets are slated to cost anywhere from $199-$299 for both systems and for the PS4 you will still need to buy a camera since most don't already own one and there is a chance the current camera won't work with the VR headset so you would need to buy the more expensive model so in the end with the PS4 you would be spending more money (Headset + Camera) $300-$400