@Starcraftmaniac - Actually the 40GB was released in the last day of last week and PS3 sold 63k in Japan. If 360 does same as last week, then PS3 would need about 59k this week.
My prediction (Jan 15th, 2008), total sales by end of 2008:
Wii - 35 million
X360 - 25 million
PS3 - 21 million