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Have to say this is very unprofessional.
I'm thinking of getting my money back, whole reason I bought this game was this new update looked awesome.

I can never get into the Discord servers, it's a mess!
The dev's said that they will get the update on Gog/Epic after they sort out the bugs. That was during the first week of release. It looks like they have some bugs, like endless sand storms and others related to the new update.

So cross your fingers and hope we unworthy get to experience all those new bugs, i mean features, soon.
They just posted the Nuclear update on Steam a few days ago to the main branch. It was on the Beta branch before then. So I assume GoG just doesn't get the beta updates