Windows 10 to be released on July 29,2015 - Reserve Now!
After Windows 7, Windows 10 will be a most successful version of Windows.
Also, Microsoft wants to keep all the users on the same version which is Windows 10. So, this time upgrade is free to all the users who has Windows 7, Windows 8 & Windows 8.1
Windows 8 is released with touch screen users in mind.