Windows 10 - coming to a PC near you!

Windows 10 will be available in 7 versions, far more than you would have expected in the first place. While IoT, Mobile, Home, Enterprise and Professional were already confirmed, Mobile Enterprise and Education were unexpected. In comparison, there were only four versions of Windows 8.1 (five if you include Windows Phone 8) and one of them was Windows RT.

Microsoft clarified the free upgrade offer for Windows 10, adding that Windows 10 Home and Pro will be available for free to Windows 7 and Windows 8.1 users that have appropriate licenses (presumably, Windows 8.1 Home users will only be able to upgrade to Windows 10 Home).