Sounds like this new SimCity has everything you’d have wanted in the old SimCities, but were limited by technology.
The look/feel style is a model town. Everything is fully simulated (i.e. your town is full of simulated families and individuals, going to work every day, turning to crime if opportunities are poor etc). And it’s a persistent online world; your neighbors are other, real players.
Despite the big advancements you might imagine big changes to gameplay, but the game seems faithful to the originals; you can’t jump into a version of The Sims and interact with the people directly, and the interactions with player-neighbors is similar to the interactions with CPU-neighbors of old.