Spielberg is a big supporter of Bluray which means his films will only appear on that format. Here. Interesting to note is the bit about Paramount/Dreamworks announcing their exclusivity to HD-DVD but excludes Spielbergs films from the deal. I am aware that Band of Brothers got released on HD-DVD over in Japan.
yet transformers of which he had a big hand in it is on hd-dvd and I swear I saw A.I on hd-dvd format when I picked up bladerunner in the airport shop flying out to NZ
He only produced transformers. He didnt direct it. Look at the directors protests and rants when he realised it was hd-dvd only, friends of his had told him bluray was the better format. I wonder who one of those friends may be...
I think you may be mistaken about A.I. its only ever been released on dvd as far as I could see searching google.
Ive also jusrt got Bladerunner on hd-dvd, the 5 disc US version
Supposed to look great.