we are only 3-4 years into a gen, Sony states will be longer than the past ones. PS2 lasted around 7 years, so i suggest a PS4 around 2014-15.
Nintendo will release an new console around 2012-13 first that could be a HD wii or 3DWii what ever and follow up by sony and Microsoft's consoles.
Of Course That's Just My Opinion, I Could Be Wrong







