From the release notes.

Boot speed is improved by removing unused features from the initramfs.

If new hardware is added, boot into the rescue initramfs and use the command

dracut --regenerate-all --force to rebuild and replace the old initramfs.

My two questions are, "do we have to do this with every new kernel release?" "Does the yum update of the kernel also run the dracut command?"

Should I put in into my crontab as a run monthly kind of thing?