From Windows Vista
Receive an Express Upgrade to Windows Vista when you buy a qualifying PC running Windows XP Media Center Edition, Windows XP Tablet PC Edition, or Windows XP Professional
If you’re in the market for a new computer this holiday season, be sure to ask your retailer about the Express Upgrade to Windows Vista, being offered by participating PC manufacturers. When you buy a qualifying Windows Vista Capable PC between October 26, 2006 and March 15, 2007, you may be eligible for an Express Upgrade to Windows Vista.
Don’t wait to enjoy the benefits of owning a new PC. Buying a Premium Ready Windows Vista Capable PC means you can buy a great Windows XP computer today, with the confidence that it will easily upgrade to the Windows Vista edition of your choice. Express Upgrade to Windows Vista offers from participating PC manufacturers will ensure you can easily enjoy Windows XP today and Windows Vista when it’s available."
Check out the Windows Vista: Express Upgrade Page HERE
A great incentive, this should entice consumers to be more open to upgrading to Windows Vista. I personally though prefer to wait until Windows Vista is pre-installed on a new PC. So I guess you would say I am in the post Jan ’07 camp.