Anyone know if this is coming to GOG?

Probably not, with the way they responded on this page:
https://steamcommunity.com/app/466560/discussions/0/1354868867708744840/?ctp=2

Yet another 'multiplayer requires steam' excuse.

The comments from users really hurt my brain... people are actually that stupid.

Yes, I had been looking at this myself some time back:
https://www.gog.com/forum/general/northguard

What with Evoland being here, but nothing on the horizon yet.

One of the comments said "the game currenlty needs you to be always online". If that is still the case, I can see several reasons why it wouldn't arrive to GOG.

Generally multiplayer and online-heavy games are tricky if it means the developer would have to support two (or more) different online multiplayer platforms, like Steam and Galaxy. Then the Galaxy version would make sense only if they believe it would bring quite a lot of new customers. Of course if they do all the online support themselves to make it store-agnostic, then I guess it wouldn't matter that much.

The dev comes back on page 4 and says probably not.

yes, again because of the multiplayer.

Yup, just wanted to mention that he or she had come back later on.

I think I actually lost a few brain cells reading that thread... Steam users really are idiots...

As long as there is a meaningful offline single-player campaign, I personally would be fine with the GOG version lacking multiplayer, as I myself wouldn't probably touch the multiplayer part anyway, like I don't in 99.9999% of my games. That didn't stop me from buying e.g. Brutal Legend or Full Spectrum Warrior games from GOG, and various others with no working multiplayer.

But I guess some feel differently and there would be an uproar for the GOG version missing something from the Steam version. Oh well.

In fact, I belong to the school of thought that it is generally better single-player and online multiplayer games are separate games. You don't have to cram both game modes into one game, usually it is better they are not. Either concentrate on making the game single-player, or online multiplayer. Like Team Fortress 2, it doesn't even pretend to be a single-player game, even if you can play maps against computer AI bots, but that is more like a training mode for the real thing, against humans online. Also World of Warcraft, it didn't have a single-player campaign, did it?

Did those games eventually added multiplayer functionality, or did they stay that way? I am like you in that regard, I almost never go multiplayer, so a single-player version could actually interest me.

Maybe the controversy would be controlled if the game was cheaper to compensate for the lack of multiplayer?

I agree.

Have been playing on console w/o an internet connection. Can still play campaign mode and single-player mode vs bots... and the bots are pretty good!

Too bad the dev has no interest in GOG. I think the experience -- even without MP -- is worthwhile.