re: what sky said,

That's why it would be nice for each of the three films to get a 3-disc blu-ray. If Lucas releases his most recent version of the trilogy in theaters (and c'mon you know he eventually will, the 3D craze would certainly give him an excuse), that could be what ends up on the first disc. The second disc could be the '97 version (mastered from the '97 IP's) and the third disc would be the original version. This would be a nice historical preservation of the three theatrically released versions of the movies.

There are 3-disc blu-ray cases that some of the studios use that don't even take up any more space than the ones that hold 2-discs or even 1-discs, so Lucas doesn't have much of an excuse there.

And guys, lemme just say it:

At this point, there's no question in my mind that when the OT hits blu-ray he'll AT LEAST throw in the remastered original versions. Each set will be at least two discs, mark my words. He KNOWS the money he'd be losing by not including it. Think of how many people will go out and buy blu-ray players just for this!

Yeah, maybe we won't get '97 Jabba, Luke's Cloud City scream and a "Galactic Celebration" sans Naboo and JarJar, but the originals will be there.

Oh, and 2012 would make the most sense at this point. It's the 35th, and blu-ray will have been on the market for just about as long as dvd was back in '04.