ithis on 30 April 2010
If it's end of life as mentioned, the PS3 since, even if Wii will sell forever, the software that will sell forever with the Wii will be a few very well selling games, while new things will sell mire on Wii2.
Xbox will have to duke it out with the PS3, and the PS3 is showing it can sell software, while at the same time showing that is it more future proof than the Xbox, thus it will have a longer meaningful stay on the market, with lots of diverse games, many of them having the potential to sell a million. (This is a long time prediction, say 5 more years including this one to know if it can be true or not.)
