No. This is critical to understand. The Extended Kernel does not add DirectX 12 Ultimate, WDDM 2.0 graphics drivers, or modern Bluetooth stacks. It only adds . It makes the OS lie effectively enough that software doesn't crash during the initial compatibility check.
Note to readers: Always verify the checksums of downloaded system DLLs. Trust, but verify. Windows 8.1 Extended Kernel
Head to the official source (usually a reputable forum like MSFN or Win-Raid). Look for a package containing ntoskrnl.exe , win32k.sys , kernel32.dll , and a patcher tool. Always verify SHA-256 hashes. WDDM 2.0 graphics drivers
Unlike Windows Vista or Windows 7, which have well-established extended kernels (such as the project by developer Windows 8.1 Extended Kernel