The original Xbox console had a lifespan of about four years, launching in 2001 and then being retired in 2005 following the launch of the Xbox 360. It had a great run, birthing such franchises as Halo, Forza Motorsport and Fable, and it introduced the almighty Xbox Live in 2002. Fast-forward to the present day and we have the Xbox 360 with a whole slew of hit games and the upgraded Xbox Live experience. On the flipside, there's the PlayStation 2 followed by the PlayStation 3, each with their own major titles and online services. The PS2 ran its course in nearly six years. With that in mind, is it still too early to start thinking about the next generation? After all, it's been four years since the release of the Xbox 360. Is an upgrade really necessary? The fact of the matter is, this generation will outlast any previous one, and by a good margin.