iTunes 8.1.1 update adds support for HD rentals, but where are they?

Consider the "where are the HD rentals in iTunes?" question partially answered, now that 8.1.1 has brought the advertised functionality to the desktop according to its own release notes. Some iPod and iPhone sync issues have also been addressed, but we know what the people want. Unfortunately, even after installing the update none of the $5 rentals in high definition are anywhere to be found, only SD. The wait continues.