Windows 10 to be free upgrade
Microsoft will make Windows 10 available as a free upgrade to customers who upgrade in the first year that the upcoming operating system is available. This will apply to users who run Windows 7, Windows 8.1 and Windows Phone 8.1. The new generation of Windows will offer a wide range of experiences designed to usher in a new era of more personal computing, as well as two new devices designed to extend the Windows experience from large screens to no screens.
