Today sony released its Q3 figures showing sales of 4.90 million units worldwide.
The total for 2007 is now 8.83 million units, taken from official Sony numbers
Official Sony Source: http://www.scei.co.jp/corporate/data/bizdataps3_sale_e.html
According to Gamespot, Microsoft's tally for 2007 was 7.3 million units.
Gamespot Source: http://uk.gamespot.com/news/6184291.html
