phaolo: For me the post seems to mean that D:OS will support GOG Galaxy in the future, but also that doesn't depend on it to be released here.
But then they go and say they'll be putting it under "coming soon" today. It's release day today, so it shouldn't be under "coming soon". The only thing I can think is that that means they're not releasing it to everybody until Galaxy is done.
Of course, all of this conjecture is unnecessary because someone from GOG should just say in plain terms: "Original Sin will/will not be available for purchase from GOG today. Backers will/will not be able to download Original Sin from GOG today." None of this "we will get it to you in its best form soon" nonsense. That's language from the site closure days.