Hey, look, another excuse to give George Lucas some more money! Yes, the entire Star Wars saga is coming to Blu-ray on September 16th.
If you want just one trilogy or the other (I'm sure the prequel trilogy is all most of you want), you can get them separately, or go all-in on one monster box set. The whole shebang is listed at $140, but you can preorder it from Amazon now for a much more reasonable $90 if interested. Just know that they're gonna try to sell you these things in 3D in a few years, and after that maybe a hologram version of it. George needs to eat, after all.