This is not really a significant news, because the PS3 was at number 9 last week.
But I wanted to post this because, having read posts from some other forums, people are still actually finding it hard to buy the Wii, at least in the Europe. People are still queuing up when new stock arrives. This is actually quite amazing because it's been out for so long, and with some headlining games being released soon, the stock is going to be even less available than before.
Expect the Xbox 360 to climb too due to the release of Bioshock, and the imminent release of Halo 3.