As of 13th January, 2014, Microsoft’s Windows 7 is no longer under mainstream support, so will no longer receive any new product updates or features. The operating system has now moved into what is known as the extended support phase, a period in which critical security updates will still be issues, and will last until 14th January 2020.
Windows 7 has been Microsoft’s most popular operating system since XP –– and is currently Microsoft’s OS market leader. Within six months of its release in late-2009, Windows 7 sold over 100 million copies, making it Microsoft’s fastest-selling OS to date. After the major GUI overhaul of Windows 8, and with its predecessor Vista considered an unstable failure, many users stuck with Windows 7 instead of upgrading.
With the technical preview version already available, Windows 10 is expected for full release later this year.