Disney does not own the rights to that material until 2020 or something, Fox does.
Sent from Deneb IV my using my Communicator to CarolinaHuddle
Always thought Lucas kept saying that the original films were badly damaged/stored that there isn't any usable film to create a bluray version.
In the meanwhile, I'll keep my WS Collectors edition (VHS) in storage. It's the only reason why I still have a VCR. And my Asian dvd bootlegs (ripped from laserdisc) get more playtime than the official releases.