Microsoft is already looking ahead to Windows 9, but still hopes its struggling Windows 8 operating system will replace older versions. Windows 8 accounted for 6.28 percent market share while Windows 8.1 had 7.09 percent market share in August, according to Web analytics company Net Applications.
Meanwhile, Windows 7 still leads with 51.21 percent market share, and Windows XP - the recently retired OS - still accounts for 23.89 percent market share, as it continues to slide. Despite a large marketing campaign, including pushing its value-added resellers (VARs) to sell Windows 8/8.1-powered devices, Microsoft has struggled to entice users to the touch-centric OS.
Microsoft "Threshold," which will be Windows 9, is expected to launch in preview mode at the end of September - and a full release is scheduled for April 2015. The software company will include a Start menu and has made changes to try to woo users away from Windows 7.