The PlayStation 4 launch date are still to be confirmed via official channels but Toys R Us may have let the cat out of the bag early on its official website. To be released 13 December 2013.
Toys R Us is right because they are the leaders when it comes to video game information. When I think video games or anything technology related I think Toys R Us first!
They may not be the leaders in gaming info which may be the reason they were dumb enough to leak the info. Im not sure if the date is right or not and dont really care at this point, I will wait for Gamecon and hear it announced officially.