Can I take a guess at the city list?
From what's evident by the photos thus far it seems to start with:
- Stockholm (capital)
- Sigtuna (Not a very notable city today, but was so historically, also is the oldest city in sweden)
- Helsinki (capital of finland, though not a very important city during the Swedish Empire, the Finnish administration was carried out from Åbo (Turku in Finnish and English))
Then I'd guess that the followup will be, though this is tricky, taking into account the Finnish cities, as well as size vs. historical significance, I'll work from the assumption that Finland and Estonia in the Swedish civ will have about the same amount of representation as Norway, Iceland, the Faroes and Greenland in the Danish Civ:
- Gothenburg (Second largest city in Sweden, as well as largest port)
- Uppsala (fourth largest, famous for their University, and Old Uppsala was the location of the most famous norse pagan temple
- Malmö (Probably spelled Malmo or something like that, can't recall any umlauts in Civ 5, third largest swedish city)
- Skara (Important Church-city, and during the middle ages, if i remember correctly, the oldest curches in sweden are located 'round here)
- Västerås
- Turku ((Åbo) "capital" of finland during the Swedish Empire, also Finland oldest city)
- Karlstad (Important maritime city during the empire)
- Visby (the City on Gotland, important during the Hanseatic League)
- Tallinn ((Reval) capital of Estonia)
- Örebro
- Linköping
- Helsingborg
- Jönköping
- Norrköping
- Lund
- Umeå
- Gävle
- Borås (Born and raised, good enough reason for me , All cities on the list between Örebro and Borås are in order of population)
- Mariehamn ("capital" of the Åland islands, an almost completely Swedish-speaking autonomous region of Finland
- Stettin ("capital" of Pomerania during Swedens Reign)
- Nyenskans (St. Petersburg, really. Because SCREW YOU Russia! We were there first! )
Or maybe they'll just copy straight of wikipedia: