I've always thought they were different takes, now I'm not sure anymore (I must compare them). Have not seen the 70mm version myself but this is what Michael Matessino (editing and assembly supervisor on the Special Edition CD's) wrote about the track in Film Score Monthly Vol. 2, No.1 January/February 1997:

Track 12, The Rebel Fleet/End Title: In 70mm versions of the film, the final scene began with this cue. Preperations of these prints began before the film was "locked," so the 35mm version contains several differences. The most prominent is the inclusion of extra dialogue and a few additional effect shots to the closing scene. The re-edited sequence required the tracking of a section of "Yoda and the Force" to precede "The Rebel Fleet." For both prints, a few bars of "The Rebel Fleet" were eliminated. This track was called "Finale" on the original album and the Gerhardt recording and "Finale/End Credits" on the anthology set.