Simcity: Societies is being developed right now. I don't think Maxis is doing it, but it resembles SimCity in many ways.

No more zoning, now you build individual houses, businesses, etc, and you can follow your sims more closely than ever before.

Things you do, and choices you make are shown in the city graphics. If you build a lot of corporations and police stations, your city will start to resemble a police state, and the buildings will start to reflect this.

This information is all courtesy of PC Gamer....