German car fans were expecting to see the updated C63 AMG this March, at the Geneva Motor Show, but photos leaked this week of the new sedan and wagon, providing a peek at what lays ahead for the upcoming C series rocket. The main exterior changes are to the fascia; the C63 AMG gets SL series-inspired headlamps, with Audi-esque LED light-piping. LEDs also make their way to the tail lamps, and the team also re-designed the 18-inch wheels, with red brake calipers grabbing the 14.2-inch front discs. Under the hood, the biggest difference is that top speed will no longer be limited to 155 mph; the 2012 C63 AMG, with the performance Development Package, will top out at 174 mph. AMG has developed a new 5.5-liter biturbo mill, but the C63 keeps 6.2-liter V8, so output remains at 451 horsepower and 443 pound-feet of torque. Some early reaction is mixed about the new fascia design, but all told, the new C63 is yet another gift to MB fans. Check out the gallery after the jump, of both the sedan and the wagon.