SilverWook said:
I asked about THX over at the HTF, and was told it probably resides with American Zoetrope.
It looks like it's Warner Bros who owns it along with the distribution rights going by the DVD/Bluray cases of the 2004 cut, no mention of Lucasfilm at all. But I guess that American Zoetrope have a say in it as well. There really should be a petition started in order to get the 1971 studio cut and 1978 restored cut released.