Just to update everyone…
I have it on very good authority that the recent German Blu-ray release by Turbine is fully uncut.
That means all the music edits and movie length Knight of the Drones (including the original title sequence) are all included.
I am not yet sure whether they’ve sourced stereo soundtracks for Season 4 but will let you all know when I know.
It’s not a cheap set but worth every penny if you value the episodes being uncut.
Seems to be Mono for those episodes from a German fan https://forum.blu-ray.com/showthread.php?t=319676&page=20
Pity.