According to this Engadget report, the PlayStation 4 will launch on Friday with a limited number of voice commands and will not support third-party apps that use the technology. Engadget claims that on day one PS4 users will not be able to turn on the console or pause videos (among other things), using voice commands. Voice commands will be in place to open the console's tray (eject) and to turn the system off. Facial recognition for logging in will also be available at launch.
Engadget goes on to say that PlayStation representatives tell that that voice recognition and gesture functionality (using the PlayStation eye peripheral) will be expanded over time. The PlayStation eye is sold separately and retails for right around $60.
Sony has not publicly confirmed or denied this story, but it makes sense because the PlayStation Eye is a separate purchase from the console and the company has not put as much emphasis on voice and gesture recognition as Microsoft has with its Xbox One console.
We will have more on this story as it develops.
The PS4 launches on Friday in North America and will have a retail price of right around $400.