FDM is running without vCenter action required. Theoretically you can configure it once and then turn off vCenter, until you need to reconfigure it again.
So as long as the hosts don't need to talk to vCenter for HA configuration settings they are not aware of the new package.
If this is purely cosmetic or not depends on the actual fixes contained in the new VIBs, if nothing was changed it does not matter but a read through the release notes should clarify this for your environment.