Got mine at 10am this morning. Amazon were true to their word. Not often you get the cheapest price and guaranteed release day delivery.
Watched the 4 hours of documentaries this morning/afternoon and thought they were exceptional. Then watched episode IV this afternoon/evening. Not really many changes from spec edition, its cleaned up brilliantly though. Lightsabers are changed throughout and some minor greedo/jabbo ones. Really enjoyed it, although you have to be in the right mood to watch a movie you've seen a hundred times before
Watching ESB now and it looks great. Will need to try and find the time to go through the movies with the commentary. A very good way to spend £27, good value for money.