The PlayStation 3 console isn't released yet and Sony is already planning a PS4 console.
With that being said, even though Sony's PlayStation 3 has yet to hit store shelves, Sony is already talking about its successor. Sony's Phil Harrison believes that the PlayStation 4 will forgo discs altogether.
With the rising popularity of using an online marketplace to download games, additional game content, demos and movie trailers, many are questioning the need for physical media in the future. “I’d be amazed if the PlayStation 4 has a physical disc drive,” said Harrison to Wired Magazine. While the market may not be quite to the point where a 100% digital distribution model would be feasible for console gamers, it may be ripe for the picking when the PlayStation 4 is released.