Why is my Kernel build version not changing after installing CU-8 ? AX 2012 R3 CU8

while installing CU 8 for Dynamics AX 2012 R3, I have noticed that, the AX version and Kernel Version are different. AX was 6.3.1000.437 , but kernel was 6.3.164.x.
here is the link for to resolve...
http://blogs.msdn.com/b/axsupport/archive/2014/12/31/ax-2012-r3-why-is-my-kernel-build-version-not-changing-after-installing-cu-8-or-the-latest-binary-hotfix.aspx

Regards,
Yes.Sudhanshu