I've noticed this before - GOG is sometimes late to update Linux versions. I was hoping that it would be ready by this evening (when I actually have some time to play the game), but it isn't here yet. I tried installing the Windows version on an old computer I have that runs Windows XP, but it won't work there. Even if it did, that computer is probably too slow to run anything less than 10 years old. It also crashes on launch when installed using Wine (.NET is probably the culprit - I tried installing the usual packages using winetricks, but that didn't solve it for some reason). Since the Linux version will likely be out in a day or two, it isn't worth wasting time trying to get it to work on Wine or on the old Windows XP computer. I'll just do something else until it is ready.
Sometimes it is a pain not wanting to use Windows, but many games are available on Linux, and I've had a 95% success rate getting Windows games to run using Wine, so it isn't a huge handicap. (I was surprised that Stardew Valley turned out to be difficult.)