Windows 11 is based on Windows 10, and it introduces the biggest changes in more than a decade. (Due to strong demand Microsoft made the OS fully available on January 26, 2022.) Following the initial release, the new version will expand to other eligible computers, and then, it’ll be fully available in mid-2022. However, only new devices will get it first. Windows 11 (Sun Valley) is the next version of the desktop operating system from Microsoft is set to release on October 5, 2021.