Denmark is in instead of the Vikings so that they could introduce Sweden. But I guess, Sweden will be a DLC-civ with a scenario focused on the 30-years war and maybe something else added in.
I guess we will get anothe Swiss City as a mercantile City state besides Geneva, but my order of guess would be Basel > Berne > Zurich > Lucerne when looking at historical importance. We will lose Amsterdam as a European city state, right? Dublin and Edinburgh might also be cut if Cardiff is representative of Celtic City Names. But after that I think they will try to spread around the city states a bit more over the world. There's really not much left in Europe and they will lose more city names if they decide to add, the Polish, Serbs, Austrians or Hungarians. Maybe Prague will be finally upgraded.