Which of course would make the entire thing a lot cheaper and faster, i mean people have been doing that at home and uploading it to Bit Torrent and the results aren't half bad, certainly better than watching from the old DVDs but it is still far away from proper HD footage.
Original Remastered Finally, an original-vs-remastered phaser strike on a Tholian ship. I LOVE THIS IMAGE Had a poster of the Original shot on my wall growing up. but if the rumor OP posted is true then it appears the CGI scenes will just be AI upscaled and they won't be using the original source files. Original Remastered Here’s a Remastered classic shot the new version is an almost exact duplicate of the original. Read this, the interesting part is everything below 'Original CG Assets', somebody named Robert Bonchune apparently still has ALL the files that his studio did: Tracking that stuff down is the real trick, considering at least one of those companies does not even exist anymore.
The CGI Spaceship and VFX shots were outsourced to two different VFX companies because of the high output of episodes and directly rendered to VHS quality by them and that source material is of course not somewhere in a CBS or Paramount vault.
Spaceships are also on 35mm as long as they were physical models but DS9 transitioned to CGI ship scenes (Voyager even more so). the Actors were shot on 35mm Film of course.