Is the nex gen needed

The next generation of gaming is fast approaching and it has some consumers wondering, are we ready.  Nintendo is already upgrading from the Wii to the Wii U the one upgrade I see as logical.  The current model only outputs standard definition and doesn't compete well with third party games.  The Wii U on the other hand will come out of the box with HD graphics and a processing power that is supposed to usurp the xbox 360.  Along with a controller that has a built in screen and many other advances this is probably the only upgrade that seems logical.  On the case of the other two systems I see a longer lifespan for them.  The Xbox 360 is starting to roll out consistent good games and is gaining ground in the console war.  Last year it was the first system to out sell the Wii since its inception.  That is a sign that more people are willing to buy 360's and the software rather than shell in the extra bucks to upgrade.  Along with and online experience that is unparalleled I see at least 3-5 more years left for this system.  Now with the PS3 I can see them upgrading sooner than the 360.  Now the PS3 has the most processor power, most of which hasn't been tapped into, however they need to gain users and a better online experience.  Perhaps by upgrading the PSN within the next few years and then rolling out the PS4 Sony can finally reclaim their thrown that they once had with the PS2.  My advice to Sony is market your products better and dish out a consistent lineup of good games for at least another year and then reveal a successor.