Microsoft site says
"DirectX 11.2 is included in Windows 8.1, Windows RT and Windows Server 2012 R2.
Note There is no standalone update package for DirectX 11.2. You can only install this DirectX version through Windows Update in Windows 8.1, Windows RT and Windows Server 2012 R2."
https://support.microsoft.com/kb/179113/
So I guess that's it. Also it will not show the directX version as 11.2 as it's not a major version..