SilverWook said:

No mention of the new scenes pasted on afterwards of course.

Nobody seems to know if THX was part of the deal. It might be jointly owned/controlled by Warner and American Zoetrope? Disney had to deal with Paramount to fully own Indiana Jones, but THX might not be something they really want.

I think it's all Warner, the DVD has no other studio on it (compared zoetrope stuff like Conversation or Apocalypse Now which are through lionsgate). The main thing to worry about is if Warner signed some unfortunate agreement with Lucasfilm that stated Lucas would pay for all the restoration and enhancements but would have final say over any content.