Most people using NT knew it as version 4. Some folks knew that Windows 2000 was...

Most people using NT knew it as version 4. Some folks knew that Windows 2000 was version 5. After that, things got weird: Vista is 6 but Windows 7 is 6.1 and Windows 8 is 6.2: http://msdn.microsoft.com/en-us/library/windows/desktop/ms72...

Windows 10 will finally (but perhaps temporarily) undo this weirdness, and report itself as version 10, but only to some applications! http://arstechnica.com/information-technology/2014/11/why-wi...