MarkoH01: That is easy to explain. They simply changed the language pack handling. The language pack now contains languages for ALL game parts (meaning base and both expansions) so in order to have the language available in the expansions the only language pack now has to be installed at last. Afaik thex didn't change anything game specific - that is probably why the version no has not changed.
Well, I see that they removed the separate language packs, but what makes no sense is that one of the two expansion packs got significantly larger, and the other expansion pack got significantly smaller at the same time. I just want to hear some kind of official explanation directly from GOG for why that happened. I'm not accusing them of anything or anything like that, I just want to understand what was present in the expansion that shrunk by almost a gigabyte that was considered removable. Was it a gigabyte of temp files that someone accidentally left in a previous build, or was it language files which were duplicated and they removed some duplication, or something else. At the moment all we know for sure is that the separate language packs were removed, and various people believe that the increase in size of the one expansion is because they included that into the expansion itself, but there is no official verification of that, and no explanation at all for why the other language pack shrunk.
Aside from that, there is no changelog about any of it, and the package version never changed. Additionally there are a few people who said they installed it and encountered problems with the game that they did not encounter with the prior build that had the exact same version number, so I'm nervous to download a possibly broken version of the game that is missing one gigabyte from an expansion pack with zero explanation as to why, which some people are saying is causing problems for them.
If the changes are truly minor in nature and easy to understand, all they need to do is probably make a 4 line post here in the forums explaining it and all is good. I mean, I trust there are good reasons for it all, I just would like to know what they are and hear it right from them directly. Any of us can guess and make assumptions, and we might be right, but we might be wrong also, and we might be missing details and the details might matter.