It's my understanding that the DC branched version on the BR will use the new color timing for that scene, while the TC branched version will use the original color timing for that scene. Can anyone who has the set confirm this?

Also, I downloaded a BR-rip of the Alien 3 extended cut, and I can confirm that the audio mix is much improved over the Quad set. The best example of this is the scene where Clemens brings an unconscious Ripley into that room in the beginning, and tells the others to go look for the crashed EEV. In the DVD version, this scene uses production audio, which is almost inaudible, requiring subtitles to be displayed. For the BR, the actors have come in to ADR this scene (and others like it), so it sounds just as good as the rest of the film, and no longer requires subtitles.