Hardware and Software numbers till the end of 2009
PS3: 34.75 million
Wii: 75.50 million
X360: 40.35 million
The PS3 will surpass the N64's sales (32.93 million) by the end of 2009.
The PS3 will have over 50 million sellers by the end of 2009. (currently has 24)
Final Fantasy XIII will be released in 2009 for Japan (Corrected!) and North America (Failed)
Edit 2, March 22
Final Fantasy XIII will sell 1.6 - 1.9 million first week in Japan (If the PS3 is at 4 million sold in Japan, which it should be (Corrected!)) and it should be able to move roughly 150K PS3's on that same week in Japan.
Edit 3, April 16
The Wii will never hit 50% market share.
Edit 4, May 15
A Slim PS3 will be released in 2009 (Corrected)
Old Predictions
2008 end sales
Wii: 39.56 million, actual numbers 44.3 million
PS3: 20.58 million, actual numbers 19.46 million
X360: 24.75 million, actual numbers 27.37 million
50 million seller games: http://vgchartz.com/forum/thread.php?id=91212