The dates for this are all mixed up. The end of Jan date is for people who bought a windows 7 pc the end date for registering is the end of Feb . On the main page it does not appear to give a end date for purchase just an end date for registering
Quote:
1.
Buy a Windows 7 PC between June 2, 2012 and January 31, 2013. *
2.
Register for the offer at windowsupgradeoffer.com before February 28, 2013.
3.
We'll send you an email with your promotion code and purchase instructions when Windows 8 Pro is available.
4.
Download and install Windows 8 Pro on a compatible Windows-based PC with Windows Upgrade Assistant.
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http://windows.microsoft.com/en-gb/w.../upgrade-offer