The free Windows 7 upgrade program will start on June 26 according to a corporate memo from Best Buy. The memo states that there will be a “Technology Guarantee” program starting on June 26 which means that people who buy computers running Vista Home Premium, Business, or Ultimate will get Windows 7 on October 22.

Pre-sales of Microsoft’s next operating system will also be available on June 26 by Best Buy.

The memo also states that, “This new operating system isn’t just a ‘Vista that works’ program.”

Source: Information Week