I've had mine ordered for a few weeks now. That AmazonUK video of the extras is what sold me. I actually have an unopened copy of the US edition from a pre-order that I forgot to cancel. It'll likely be given as a gift unless I have some sort of problem with the UK edition. It's pretty tough to have it just sitting there, not entertaining me. Fortunately, a couple of Raiders screenings in theaters in the last two weeks have helped tide me over till the October release.
It's hard to believe that neither version has everything from 2008's KotCS Blu-ray. And like the Star Wars Saga, Lucasfilm seems to like making DVD and Blu-ray editions that mutually leave off some of the other format's features.