The version number (often formatted as 6.0.6133) is a specific build released by Apple. Here is the breakdown:
Look for "Boot Camp 6 for Windows 10" in the list of available updates. Alternative: Manual Download Using "Brigadier" bootcamp 60 6133 updated download
Once you have the correct package (it will be a folder named WindowsSupport or a file called BootCampSetup.exe ): The version number (often formatted as 6
It includes essential drivers for: