Windows 8 could reportedly sport Windows 6.2 as the version number, according to a third-party source. Although, Microsoft has yet to share any details related to the versioning of Windows v. Next with the public, but there is a precedent indicating that the version of Windows 8 might end up as 6.x rather than Windows 8.0.
According to Windows8italia "a new driver from NVIDIA which apparently references a new Windows kernel, version 6.2, which can only be associated with the next major iteration of Windows."
The successor of Windows Vista, the Windows 7 which was Windows 6.0 is version 6.1.
"When we moved to Windows Vista from XP going from a version number of 5.1 to 6, actually breaks lots of apps that check for the major version number. So a lot of people look at the version number and try to read something into it.
"If you follow that logic you can figure out the version number for Windows 8.
"So version 18 will be 22.214.171.124.1.1"