I'm calling this one out.
launching a console in this glitzy next gen world is expensive. In previous generations, a console would last 3-5 years before being replaced.
With PS3 and xbox 360, it's just too disruptive and expensive to get the console costs down to generate a profit on that lifespan.
That's what Kinect and Move was all about - They're mid-life updates to add new features and re-invigorate the player base, in lieu of new consoles.
I'd be surprised to see either Xbox 720 or Playstation 4 before 2013, more probably 2014.