WTF!?
My words exactly.
To add to the confusion, you're still presented with the updated bundles from the HP server software/drivers lists for ESXi:
http://www.hp.com/swpublishing/MTX-01441a612d354aba868f22f96a hp-esxi5.0uX-bundle-1.4-16.zip
http://www.hp.com/swpublishing/MTX-c22b0c1988f147308f06bb4ab9 hp-HPUtil-esxi5.0-bundle-1.4-15.zip