A leaked Best Buy company memo reveals that the company will be offering free upgrades to Windows 7 for customers who buy computers loaded with Windows Vista. The versions that are a part of this promotion are Home Premium, Business, and Ultimate. This deal will also benefit those who buy a copy of the appropriate Operating System on its own. Upgrades will also be available for Windows 7 Home Premium and Windows 7 Professional for $49.99 and $99.99 respectively. These upgrades would be for those consumers who already have an older version of Windows and don't want to buy a new copy. The official pricing for Windows 7 hasn't been released yet, so this could prove to be a steal.