I've bought Syberia 1+2 in the recent promo for a friend of mine who isn't that fluent in english. I'm positive there were several language options, including german and french.
Now they seem to be gone. Whats up with that?

With both games you can choose which languages you want to install by clicking on the "Options" button on the installer and ticking the appropriate checkboxes.

Thank you Namur, that was indeed the solution. It's odd though that according to the gamecard, english is now the only option when it used to list several languages.

That is weird indeed that the languages are not mentionned anymore.

I hope it is true i can still install Syberia1+2 and Amerzone in French, because this is why i bought them from GOG in the first place.

Steam for instance mentions the multi-lang for both Syberia games.

What is the reason for not mentionning the available languages on the product info? It might refrain potential buyers.

I find no language options upon installation. The only options I get are whether to install the game and a desktop shortcut.
If anyone knows which are the respective english/french audio and video files, I could try swapping them.

Update for 2020. The game itself has no language options. The offline installer no longer has language options. Before downloading the offline installer, you must change the language to the one you want. Then you will get the right installer. The name of the downloaded installer file contains the language name. For example, "setup_syberia_french_1.0.0_hotfix3_(18946).exe" instead of "setup_syberia_1.0.0_hotfix3_(18946)".