We are following suit with Microsoft, which is offering an additional complimentary license of Windows XP for users of high end Windows 7 editions. That "feature" is called XP Mode. All of our current and future products (Diskeeper, HyperFast, Undelete) will include an allowance to install a second instance of that licensed software in that XP Mode (virtual Windows XP operating system) as well. We are updating our EULA to "officially" note this, but you heard it hear "officially" as well.
If you are using the Windows 7 RC you can download the XP Mode feature and other requirements to run it here.