Windows 10 - release information | Microsoft Docs
docs.microsoft.com › en-us › windowsNov 16, 2021 · Windows 10 release history. Beginning with Windows 10, version 21H2, feature updates for Windows 10 release are released annually, in the second half of the calendar year, to the General Availability Channel. They will be serviced with monthly quality updates for 18 or 30 months from the date of the release, depending on the lifecycle policy.
Windows 11 - Wikipedia
en.wikipedia.org › wiki › Windows_11Windows 11 is the latest major release of the Windows NT operating system developed by Microsoft that was announced on June 24, 2021, and is the successor to Windows 10, which was released in 2015. Windows 11 was released to the public on October 5, 2021, as a free upgrade via Windows Update and Windows 11 Installation Assistant on eligible ...