From what we've seen so far, the following new city states are in:
Bratislava - Cultural
Ur - Maritime
Riga - Maritime
Sofia - Militaristic
Panama City - Maritime
Mbanza-Kongo - Unknown, not Maritime
Whilst the following are still in the game:
Monaco - Cultural
Wittenburg - Religious
Zanzibar - Mercantile
La Venta - Religious
Jerusalem - Religious
Prague - Cultural
Cape Town - Maritime
Geneva - Religious
Belgrade - Military
For reference, here are the city states for Gods & Kings:
Cultured:
Brussels
Bucharest
Florence
Kathmandu
Kuala Lumpur
Milan
Monaco
Prague
Warsaw
Yerevan
Militaristic:
Almaty
Belgrade
Budapest
Hanoi
Sidon
Valletta
Maritime:
Cape Town
Jakarta
Lisbon
Manila
Mombasa
Quebec City
Ragusa
Rio de Janeira
Sydney
Venice
Mercantile:
Antwerp
Cahokia
Colombo
Genoa
Hong Kong
Marrakech
Singapore
Tyre
Zanzibar
Zurich
Religious:
Geneva
Jerusalem
La Venta
Lhasa
Vatican City
Wittenberg
Here italics/ shows a city state that would have been replaced due to the inclusive of a new civilization, whilst bolded shows city states confirmed to be in.
So, with that in mind, let's think about what we've seen then.
We know that we have in terms of City States removed:
Maritime: 2
Cultured: 1
In terms of city states added:
Maritime: 3
Cultured: 1
Militaristic: 1
Unknown: 1
So that means that we know that there's most likely a Civ with a Maritime city state in the game, and a Civ with a Militaristic City state in the game, with a third that we as of yet don't know, although probably not Maritime (Mbanza-Kongo is quite inland).
So, what are the options then?
For the militaristic city state:
Almaty - A silk road Civilization?
Budapest - Hungary
Hanoi - Vietnam
Sidon - Phoenicia
Valletta - Malta
Of them the most likely would seem to be Hungary, Vietnam and Phoenicia.
Then the Maritime city state:
Jakarta - Indonesia
Manila - Phillipines
Mombasa - A new African Civilization
Quebec City - Canada
Ragusa - Croatia
Sydney - Australia
Venice - Italy*
*A bit note on Italy is that we'd expect to see other new City States as well:
Venice - Maritime
Genoa - Mercantile
Florence - Cultured
Milan - Cultured
Some have suggested Venice on it's own, but I doubt that ever even crossed the developers minds. If a couple of new cultured city states, and a mercantile one appear, I'd get excited if I wanted Italy in. In any case, from the Mercantile, I'd guess Jakarta at this point.
There's no point really talking about Mbanza-Kongo at this point as we don't know what kind of City State it is.
Anyhow, we can also rule out:
Olmecs
Israel
Czechs
South Africa
Switzerland
Slovakia
Kongo
Latvia
Sumeria
Bulgaria
Panama
Serbia
Let's hope there's some new info soon.
Edit: Belgrade being seen added to the lists
Bratislava - Cultural
Ur - Maritime
Riga - Maritime
Sofia - Militaristic
Panama City - Maritime
Mbanza-Kongo - Unknown, not Maritime
Whilst the following are still in the game:
Monaco - Cultural
Wittenburg - Religious
Zanzibar - Mercantile
La Venta - Religious
Jerusalem - Religious
Prague - Cultural
Cape Town - Maritime
Geneva - Religious
Belgrade - Military
For reference, here are the city states for Gods & Kings:
Cultured:
Brussels
Bucharest
Florence
Kathmandu
Kuala Lumpur
Milan
Monaco
Prague
Warsaw
Yerevan
Militaristic:
Almaty
Belgrade
Budapest
Hanoi
Sidon
Valletta
Maritime:
Cape Town
Jakarta
Lisbon
Manila
Mombasa
Quebec City
Ragusa
Rio de Janeira
Sydney
Venice
Mercantile:
Antwerp
Cahokia
Colombo
Genoa
Hong Kong
Marrakech
Singapore
Tyre
Zanzibar
Zurich
Religious:
Geneva
Jerusalem
La Venta
Lhasa
Vatican City
Wittenberg
Here italics/ shows a city state that would have been replaced due to the inclusive of a new civilization, whilst bolded shows city states confirmed to be in.
So, with that in mind, let's think about what we've seen then.
We know that we have in terms of City States removed:
Maritime: 2
Cultured: 1
In terms of city states added:
Maritime: 3
Cultured: 1
Militaristic: 1
Unknown: 1
So that means that we know that there's most likely a Civ with a Maritime city state in the game, and a Civ with a Militaristic City state in the game, with a third that we as of yet don't know, although probably not Maritime (Mbanza-Kongo is quite inland).
So, what are the options then?
For the militaristic city state:
Almaty - A silk road Civilization?
Budapest - Hungary
Hanoi - Vietnam
Sidon - Phoenicia
Valletta - Malta
Of them the most likely would seem to be Hungary, Vietnam and Phoenicia.
Then the Maritime city state:
Jakarta - Indonesia
Manila - Phillipines
Mombasa - A new African Civilization
Quebec City - Canada
Ragusa - Croatia
Sydney - Australia
Venice - Italy*
*A bit note on Italy is that we'd expect to see other new City States as well:
Venice - Maritime
Genoa - Mercantile
Florence - Cultured
Milan - Cultured
Some have suggested Venice on it's own, but I doubt that ever even crossed the developers minds. If a couple of new cultured city states, and a mercantile one appear, I'd get excited if I wanted Italy in. In any case, from the Mercantile, I'd guess Jakarta at this point.
There's no point really talking about Mbanza-Kongo at this point as we don't know what kind of City State it is.
Anyhow, we can also rule out:
Olmecs
Israel
Czechs
South Africa
Switzerland
Slovakia
Kongo
Latvia
Sumeria
Bulgaria
Panama
Serbia
Let's hope there's some new info soon.
Edit: Belgrade being seen added to the lists