Rol - I have said since the Wii specs were released (and actually higher than what they truely are), that Nintendo designed a system that had the ability to be replaced quickly if sales ever started tapering off. And if you've ever seen my predictions and analysis of the market, that in 2008 and 2009, Wii sales in the US and Europe would start to fade, and cause the Wii sales to shrink significantly.
Since I believe that, I believe the next logical step: Nintendo will introduce the next Wii-like system quicker, as they've made tons of money on the Wii, and don't want sales to plummet too far in the US/Europe, so they release a Wii2 or whatever to re-ignite sales. If the Wii does sell 80m+, I would agree that the Wii would end up with a 2012 launch or so, but I don't.
Input device wise, I've already said in other threads that MS and Sony will addopt more interactive functions as the norm, so to me it's a non-issue. I am more of giving specs because of the price(s) of the systems being critical: MS goes to a sub-$300 price. Sony launches PS4 at $249, ect.
I believe the PS4 comes late because again, Sony won't make money on this gen until real late (2010 and later), and needs to recoup some cash, so they keep the PS3 on the market longer. They've spent far more in deving the PS3 than Nintendo did with the Wii, or MS did with the 360, therefore it NEEDS to be on the market longer to justify the pricetag of R&D.
Back from the dead, I'm afraid.
