Gundam CCA and F91 are getting a 4K UHD+BD release in Japan this summer. CCA and F91 have a new discrete 4.1 soundtrack based on the original theatrical 4:2:4 matrixed Dolby Stereo track, but with an added LFE channel. The included 1080p Blu-rays have been confirmed to include the new soundtrack and presumably the video is sourced from the new master.
@Jeremy Graves @anime_andrew If you were ever to release CCA and F91 on BD, could you please look into getting the new video master and soundtrack?