[Macboatmaster]

1. Register for Windows 8 upgrade
https://windowsupgradeoffer.com/en/

2. This upgrade promotion for Windows 8 Pro both online and at retail runs through to January 31^st, 2013.



We set out to make it as easy as possible for everyone to upgrade to Windows 8. Starting at general availability, if your PC is running Windows XP, Windows Vista, or Windows 7 you will qualify to download an upgrade to Windows 8 Pro for just $39.99 in 131 markets. And if you want, you can add Windows Media Center for free through the "add features" option within Windows 8 Pro after your upgrade.



http://windowsteambl...-for-39-99.aspx

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Here is some additional information for people who qualify for the even cheaper $14.99 upgrade.

Eligibility Details

The offer is for customers (e.g. home users, students, and enthusiasts) who purchase a qualified PC. A qualified PC is a new PC purchased during the promotional period with a valid Windows 7 OEM Certificate of Authenticity and product key for, and preinstalled with:

Windows 7 Home Basic;
Windows 7 Home Premium;
Windows 7 Professional; or
Windows 7 Ultimate.

The promotional price is limited to one upgrade offer per qualified PC purchased, and a maximum limit of five upgrade offers per customer.

Key Dates

You must purchase a qualified Windows 7 PC between June 2, 2012 and January 31, 2013 to be eligible for this offer. The last day to register and order your Windows 8 upgrade is February 28, 2013.

From Source

[Tim_the_WIzard]

Here is some additional information for people who qualify for the even cheaper $14.99 upgrade.

Eligibility Details

The offer is for customers (e.g. home users, students, and enthusiasts) who purchase a qualified PC. A qualified PC is a new PC purchased during the promotional period with a valid Windows 7 OEM Certificate of Authenticity and product key for, and preinstalled with:

Windows 7 Home Basic;
Windows 7 Home Premium;
Windows 7 Professional; or
Windows 7 Ultimate.

The promotional price is limited to one upgrade offer per qualified PC purchased, and a maximum limit of five upgrade offers per customer.

Key Dates

You must purchase a qualified Windows 7 PC between June 2, 2012 and January 31, 2013 to be eligible for this offer. The last day to register and order your Windows 8 upgrade is February 28, 2013.

From Source

[Ztruker]

It doesn't appear to be an upgrade version. I downloaded Win 8 Pro, created an I .iso then a bootable flash drive to install it. Booted the flash drive and installed in place of the Win 8 Customer Preview and it activated fine.