There's a SimCity 4 Preview on GameSpot describing what's new and different about the next installment in the classic city-building series, as well as aspects of the successful formula Maxis will not be changing. They discuss how the emergence of the SimCity-inspired Sims is influencing the project, the way cities now interact with their regions, newfound variety in city types, new interface options, maintaining balance, new buildings, improved graphics, and more.