Well, crap, I didn't see that scroll button for more sorting options. D'oh!
Still doesn't display release dates, though. And when you sort by release date, the titles don't appear in the same order that VUDU had provided to me. I think the site is sorting by sell-through availability, rather than rental availability.
For example, Jane Eyre became available to rent in HDX on 8/2 but won't be available for sell-through (SD only) until 8/16. If you sort by release date, it doesn't show up at all yet. But Soul Surfer, which became available both ways on 8/2, does.
As I said, I find the site confusing. I prefer a more straight-forward list. YMMV.