It should still report "Windows 8.1" but running systeminfo will show OS Version: 10.0.10240 – the kernel version spoof.
If you are looking to run modern software on Windows 8.1 after its end-of-support (January 2023), here is the verified status and the closest available alternatives. 1. The Current Status of "Verified" Projects Official Support windows 81 extended kernel verified
on Windows 7 to run 8.1 apps, or the fact that Windows 8.1 already includes many of the APIs that older OSs lack. It should still report "Windows 8
Play newer titles on Steam or Epic Games Launcher that officially dropped support for 8.1. windows 81 extended kernel verified
: Regularly back up your system. This ensures that you can quickly recover in case the extended kernel causes issues.