Hardware update requires updated version of RHEL to RHEL 6.7

This system was originally certified with RHEL 6.6 or below . However, a subsequent hardware refresh of this system contains a processor update that requires at minimum RHEL6.7 in order to remain supported.
The effected CPUs:
E5-2600 v4
E5-2650L v4
E5-2660 v4
E5-2680 v4
E5-2698 v4
E5-2699 v4
E5-4667 v4
E5-4669 v4
E7-8800 v4
E7-8890 v4