Many legacy enterprise tools used the winnt or winnt32 architecture to identify the host operating system. If a deployment script looking for a "6.2" environment (Windows 8) encounters Windows 10, it can trigger a compatibility mode. Why the "62" Identifier Persists in Windows 10:

So — it’s Windows 8.

Windows 10 is the culmination of Microsoft's shift from consumer-grade "9x" architecture to the robust NT (New Technology)