According to the well-known publications of
The Verge and
Ars Technica , Microsoft has taken an unprecedented step for itself. The company wants to change the internal numbering of the Windows kernel version. On one of the Chinese sites was posted a screenshot of the latest version of Windows 10 TP, which shows that MS abandoned the usual numbering of versions of the Windows NT kernel, skipping from version 6.4 (NT 6.4, the current version number of the Windows 10 kernel) immediately to number 10.

The standard kernel numbering of Windows NT, on which all of today's Microsoft operating systems are based, starting with Windows NT itself and ending with Windows 8.1 / RT 8.1 - Windows 10, has never changed. In fact, each release of Windows was always assigned the version number of Windows NT itself (that is, the version of the executable kernel file
ntoskrnl.exe ), for example, Windows 2000 - NT 5.0, Windows Vista - NT 6.0, Windows 7 - NT 6.1, Windows 8 - NT 6.3. Windows 10 should have been assigned an NT 6.4 number, as was seen in the first version of Windows 10 TP. These are the so-called two major (major) and minor (minor) numbers that define the real (not branded) version of Windows. Depending on the number of changes made by developers to the kernel, as well as the scale of these changes, for the OS being released, these numbers increased by one or remained the same. Since the release of the first versions of Windows NT in the early 90s, this data has never undergone marketing or other changes.
Our sources tell us what you’ve been using for 10 years. I’m told that there were some versions built calling themselves 9.0, too.
Ars technica')

Fig. Screenshot of the new version of the Windows 10 kernel from the Chinese site.