Prior to the iTunes 8.1.1 (66MB download), HD movie rentals were only accessible to owners of the company's Apple TV wireless set-top-box.
The new update also "provides a number of bug fixes, including addressing issues with VoiceOver and syncing with iPhone or iPod touch," according to a brief set of release notes.
Meanwhile, ArsTechnica reports on Apple's ongoing expansion of its standard definition movie catalog. According to the tech site, almost 300 titles have been added to the iTunes store for rent over the last week, with more than half of those added this weekend alone.
The majority of the new additions are said to be "library" titles, which fetch$2.99 per rental.