The PS3 came out six years into the PS2's lifecycle and many people say it was rushed out. So with a new push and tech being so hard to make there is good reason to believe the PS4 will be out 2012 or later. Xbox is treating Natal like a console launch supposedly and will need atleast 2 holiday seasons to make it work (of course it probably won't and they might cut loses agin and restart early). So another long gen.