Does GOG version has subtitles? This game really needs it for non-english gamers. (And for english users too, may i say, due the lots of information in not so clear -- russian accent -- audio)

Nobody?

No subtitles so far. Sad.

You can choose the language for audio/text in the installation directory with "language_setup.exe".
You can choose from english, german, french, spanish and italian.
So no subtitles but in native language it's ok for me.