New consoles will hit the retail shelves by 2012 for all 3. MS and Sony will probably be 1st/2nd, not in any particular order, with Nintendo up to 1yr at most after them since they will be able to enjoy the affects of being #1 and having a system that will actually be a viable platform to sell games on after the next gen starts.
360 and PS3 are NOT going to last as long as the Wii since they will have at best 1/2 the market base combined. They will be shut down similar to the Gamecube.







