After attempting to give you power over the forces of biology, evolution, and arms-in-places-where-arms-shouldn't-be with Spore, Maxis is purportedly returning to its urban roots. According to scans from German magazine GameStar (via NeoGAF), Sim City 5 is building a hilariously complicated series of roads to 2013. Apparently, a brand new graphics engine, resource/economy-sharing multiplayer, upgradeable buildings, and roads that curve (!) are among the new biggest new features coming along for the ride. Maxis, meanwhile, hasn't made a peep so far, but it does have a major event scheduled for GDC next week, and it doesn't take a rocket surgeon (or even, say, a vaguely competent city planner) to put two and Sim City 5 together. For now, though, click through the link for a bit more info and some nice concept art.