Concept map made on the leaks. Holds up to what they've said but I feel the smaller cities and the main city itself is too large and it also doesn't account for the two smaller islands of Cuba and Bahamas nor whatever the third island is.
I think the artist behind this map is thinking to grand, no way will it have that level of density in the cities and still retain it's scope but it does follow the generational trajectory we've seen from previous games evolutions.