Short desc:
 a number of fixes came to 8uX to support Win 10 for getting correct os name/version ( os.name property ). See JDK-8066504.
But this issues still actual for 7uX.
In particular os.name property returns "Windows 8" on Windows 10 OS.
Just try System.getProperty("os.name");

As Windows 10 is supported configuration for 7uX we need to add support for Windows 10 related to os.name.
It's also needed for 7uX deployment to define Win10 specific resources/info in jnlp files.