They crossed this milestone earlier this month.
As per the company they had touched the 5 million milestone in 1 year and 2 months. The 10 million mark was touch in 1 year and 8 months. The latest milestone was reached in 2 years and 3 months.
Sony had launched their PlayStation Network service on November 11, 2006.
The company added that they have sold more than 21.3 million units of PlayStation 3 gaming console. The company has also sold more than 50 million units of PlayStation Portable.