what iv'e got so far is 20 sites in total. although some sites might be empty or abandoned and may not have any titans present, i'm guessing the one in pacific is skull island, the one in japan is the muto site, the one in the Atlantic ocean is a sea based titan maybe ebirah, manda or megalon. one that is either in thailand or cambodia could be kumonga or kamacuras and one that is usa is probably anguirus. would love to see gorosaurus, battra, baragon, varan and hedora make an appearance though, with some redesigns. got to imagine there might be a couple of new monsters too.
also got a feeling some other non-godzilla monsters might appear such as gaira and sanda etc,