Microsoft recently announced a deal offering a $14.99 Windows 8 upgrade to users buying PCs from June 2, 2012 through Jan. 1, 2013. Here are the details.

What is needed to upgrade?

The heavily discounted upgrade to Microsoft's next version of Windows available for users who buy PCs through Jan. 1 2013; upgrades may be claimed through Feb. 28, 2013. To claim an upgrade, users need to provide the PC's model number, the date and location of purchase, and phone number and e-mail address.

How does the upgrade process work?

The upgrade process is almost identical to buying Windows 8 on Oct. 26. The upgrade becomes available alongside the Upgrade Assistant on users' desktops. Microsoft will advise users to run the Upgrade Assistant to ensure compatibility with Windows 8. Finally, users who qualify can enter a code to get the discount before downloading the upgrade.

When is the upgrade period?

To qualify for the upgrade offer, Windows 7 PCs must be bought by Jan. 31, 2013, while the upgrade offers runs until Feb. 28, 2013.

Why upgrade?

Ultimately, upgrading is a question of user preference. With the new Modern UI in Windows 8, the removal of the start orb/button from the traditional desktop environment, Xbox Live integration, and a faster operating system are just a few of the differences compared to Windows 7. Windows 8 launches on Oct. 26.