This has all most no chance of happening: microsoft isn't stupid, they know that if they release xbox 3 that early then when ps4 comes along 2 or 3 years later the xbox will have no chance of competing.
End of 2012 prediction:
xbox 360 : 73-75 million
playstation 3 : 72-74 million
wii : 104-105 million 
Most hyped for :
Bioshock: infinte, The Last Of Us, Alan Wake's American Nightmare and Agent







