this is just what i heard, i am not accusing anyone here.
i am not that technical to know anything about it myself, just think if gog really are using
flt releases it's not a fine thing. hope there can be some clarification.

here someone has something to say about heroes chronicles : all chapters

The manual comes from Clash of the Dragons and in very poor quality. Soundtrack is identical to MP3 folder in the game folder. The main self-extracting archive called 'setup_heroes_chronicles.exe' utilizes Inno Setup Version 5.2.3 and can be unpacked by any compatible unpacker like innounp. Nothing to do with the original games here.
About game executables:
Chapter I.
Warlords.exe is identical to corresponding Cracked exe done by FAiRLiGHT(FLT) release group. The only difference between FLT and GoG executables: GoG removed the FLT title "$ID : KPE2K-SDKCR111-F21L03T2C0L0S000208A2F" from his exe. That's all!
Chapter II.
Underworld.exe is identical to corresponding Cracked exe done by FLT. The only difference between FLT and GoG executables: GoG removed the FLT title "$ID : KPE2K-SDKCR111-F21L03T2C0L0S000211945".
Chapter III.
Elements.exe is identical to corresponding Cracked exe done by FLT. The only difference between FLT and GoG executables: GoG removed the FLT title "$ID : KPE2K-SDKCR111-F21L03T2C0L0S0001F0CF3".
Chapter IV.
Dragons.exe is identical to corresponding Cracked exe done by csir.cjb.net (In my opinion the FLT executable is better. Ask GoG why he did not use the FLT executable). The only difference between csir.cjb.net and GoG executables: GoG removed the csir.cjb.net title "unwrapped with unSafedisc - csir.cjb.net -" from his exe. That's all!
Chapter V.
WorldTree.exe is not identical to original executable. From GoG executable 43 bytes of code have been removed. Why? Ask GoG!
Chapter VI.
FieryMoon.exe is almost identical to original executable. Only CD check (6 bytes) have been removed.
The Final Chapters.
Chapter VII.
Beastmaster.exe is identical to corresponding Cracked exe done by 'Cama of Tribunal' Crackers team for GameCopyWorld (In my opinion the FLT executable is better. Ask GoG why he did not use the FLT executable). The only difference between 'Cama of Tribunal' and GoG executables: GoG removed the 'Cama of Tribunal' title "-razor 1911 rtl-" from his exe.
Chapter VIII.
Sword.exe is identical to corresponding Cracked exe done by 'Cama of Tribunal' Crackers team for GameCopyWorld (In my opinion the FLT executable is better. Ask GoG why he did not use the FLT executable). The only difference between 'Cama of Tribunal' and GoG executables: GoG removed the 'Cama of Tribunal' title " nofear " from his exe. That's all.

Summary. All executable modules (except Chapters V-VI) have been stolen from various crackers and (except only Chapter VI) has nothing to do with the original.

P.S.
1. GoG mistakenly put in his self-extracting archive the file Hchron_1.vid from German game release. English file is missing.
2. Hchron.vid file (with ingame video) is homemade.

This has been discussed in the past. Sometimes they do use cracks because the source to remove the DRM no longer exists.

ah okay, still kinda new here. so i missed that discussion.

"Yer'onner, they stole the stuff I'd rightfully stolen from the original owners!"

To be fair, the search engine doesn't work well and that discussion was a long time ago.

I think the result on that was that no crack group is going to try to enforce their rights to a cracked copy of a game that they didn't have the right to crack in the first place. And I don't think that they'd own the copyright to the crack anyways as it's basically just the original files that have been modified to not check for permission.

I think the conclusion to the discussion was that any modifications they made to the software was owned by the rights holders (of the game) anyway, so GOG has every right to use them.

If I'm one of those crackers, I'd be happy that my work is used in an official manner to further the cause of DRM-free gaming.

No it's not a fine thing.
However, with the companies track record of "preserving" video games / sourcecode, devs splitting up / quiting / moving to different companies, DRM meassures invented without a thought about actually removing it someday...
... it becomes unavoidable. I always wondered: what's the problem these crackers have with stuff like that? That they can't sue them for intellectual theft or that their name was removed?
My bet is on the second.

**yawn**

How will this influence the game? Does this mean that one of the cut-scenes in the game have German subtitles instead of English? Did anyone checked this?

What does "homemade" mean in this case? The original cut-scene was replaced with something else?

that was my point kinda too. if gog just uses cracks, its understandable.
but if its changes the whole game from its originality...

Perhaps modifications are sometimes required to make the game playable or to bypass a copy protection. And sometimes the original coding is shit anyway.

yes but german subtitles or homemade video?

i know, just bought normality and the soundtrack seems to be missing song 4...