Did anyone else bought the game during the sale?
In my library only the standard version shows up.

Try an account refresh.

They're probably having tech problems. This is what it should look like :

Sounds like a job for Support if the account refresh doesn't work.

I remember that when GOG keys were handed out to people who were getting the game as a D:OS backer reward, some of us got the standard instead of Imperial version because of some error; maybe it's a related problem. Or D:DC is just unlucky.

Thanks, than i should ask the support...the account refresh doesn't work >_<

Edit: Oh lol, problem solved...the Upgrade is not available in german.