s1r1on: Today I got this answer from GOG support:
"Hello,
thank you for your patience.
I have reached out to our Product team regarding the missing patch and they've confirmed they are working on bringing it to GOG as soon as possible :)
If you have any further questions, please let me know."
Many thanks for that. :-)
I'll wait for my first playthrough of Remaster IV-VI... or better: I haven't even completed I-III (not even I), so I'll just wait... and wait... and wait... but I'm still optimistic.
Thank you for the Update. At least it's a dign they are still working on it.