Microsoft has officially opened registration for new Windows 7 users (who purchase Windows 7 PC between June 2, 2012 – January 31, 2013) to upgrade to Windows 8. Microsoft is offering the upgrade to Windows 8 Pro for $14.99. It may be recalled that the Indian consumers are entitled to a downloadable upgrade to Windows 8 Pro for a price of just Rs. 699.

Microsoft in a tweet announced, “"The @Windows upgrade offer is now available in 140 countries. Register now! http://windowsupgradeoffer.com."

To upgrade, users will be required to provide their 25-digit Windows 7 OEM product key as part of their online registration process. Starting October 26th, the company will start sending out promo codes through e-mail, which can be applied upon checkout within the Windows 8 Upgrade Assistant.