Sony reveals how the PlayStation 4 Eye works@ 2013/02/22
The Sony Studios chief used a PS Eye-style AR game as an example, saying that with the original camera, one lens had to do everything. With the new unit, one camera will concentrate on capturing the action and ensuring good picture quality, while the other is dedicated to motion tracking. Another reason that the Move functionality was incorporated into the DualShock is to enable the console know where you're sitting in relation to the TV (and your on-screen character). The company is also aiming to enable users to take 3D pictures and video and store it on the console. As for the microphones in the new Eye and how that'll impact interaction with the PlayStation 4 on a system level, Yoshida wasn't giving up any details. Though he said it'll be incorporated into games (a la Kinect voice commands on Xbox 360 games), he wouldn't give up whether you could use your voice to control the PlayStation 4 on a system level.