CurrentVersion value in registry for each windows operating system

Question

I want to know CurrentVersion value for each operating system at

HKLM "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion"

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Answer 1

updatable list located at MSDN : https://msdn.microsoft.com/en-us/library/windows/desktop/ms724832.aspx

for now (March 2015) :

Operating system              Version number
----------------------------  --------------
Windows 10 Tech.Preview       10.0
Windows Server Techn.Preview  10.0
Windows 8.1                    6.3
Windows Server 2012 R2         6.3
Windows 8                      6.2
Windows Server 2012            6.2
Windows 7                      6.1
Windows Server 2008 R2         6.1
Windows Server 2008            6.0
Windows Vista                  6.0
Windows Server 2003 R2         5.2
Windows Server 2003            5.2
Windows XP 64-Bit Edition      5.2
Windows XP                     5.1
Windows 2000                   5.0