If you buy a new PC with Windows 8 Pro, you’ll get downgrade rights to Windows 7 or even Windows Vista. Therefore, if you find that you are not all that happy with the touchy-feely new Windows 8, you can switch back to an older version under the same OEM license. Primarily this can be implemented by OEM’s in two ways, either they can pre-install Windows 7 and provide users discs to install Windows 8 if they so choose or your new PC will come installed with Windows 8 and discs will be provided for Windows 7 installation. Either way its not a bad deal for the consumer.
Source: PCWorld
