eddieballgame: Definitely want to see these dlcs/expansions on GOG.
The free updates are going out on GOG so you're not missing out on them, it's only the DLC maps, which we're struggling to get into GOG via their DLC system. Now we're thinking it's more likely we will do a deluxe version, which includes these, and then offer this to people, who already own the game, at a lower price so they aren't paying twice. Either way, they will come out on GOG at some point but it's hard to know when at this stage.
SecretGamesCo: We are still in touch with GOG developer support about this but fixing the issue has not gone as smoothly as we thought it would so we're now thinking about an alternative solution, where we have a 'deluxe version' on GOG (including the 6 DLC maps) and we make this a lot cheaper, for people who already own the base game. We will get there in the end but I am very sorry for how long it is taking.
eryngo: Any progress at this subject? It's almost a month now and no signs of progress. I'm still in my refund period, and i'd like to know if its best to refund and buy on steam instead, or is it safe to wait because it is guaranteed a solution will be provided (anytime very very soon)?
I'm afraid it's definitely not safe to wait, we don't know when it will happen ourselves but it's unlikely to be v soon. Sorry not to have better news.