In a teasing post on the official website for The Witness, famed indie developer Jonathon Blow has shared a couple of side-by-side images that suggests some manner of Virtual Reality support is intended for the game.
The filenames of the images, vr1 and vr2, seem to confirm head-mounted display intentions, but keen eyes have noticed that the barrel distortion pictured does not match that used by the prominent Oculus Rift device. Sony has been rumored to have been working on their own PlayStation 4-compatible head-mounted VR display. However, Blow has since clarified that they are just a proof of concept at the moment, and don't represent any specific VR application:
The actual distortions applied to these images are not the real ones. You can think of it as just being a test of an arbitrary distortion function. When you plug in a particular VR device, the distortion gets set up to be what that device wants (which is going to look pretty different from what’s in these images). Really these images are just saying, “hey look, we made the engine able to render two views simultaneously with different camera positions and distortions.”
The Witness is currently in development for PC, PlayStation 4 and iOS and due in early 2014.