Mercedes-Benz has "accidentally" revealed the 2014 S63 AMG in one of the official videos made for announcing the start of the S-Class production in Sindelfingen, Germany.
Looking surprisingly restrained, the range-topping S-Class model comes with several aerodynamic tweaks and bigger AMG-specific alloys. We also notice the V8 bi-turbo lettering on the sides while at the back there's the "S63 AMG" label. The hotter version seems to be lacking the fins in the air vents, but overall the design hasn't changed that much.
Power should come from a V8 5.5-liter twin-turbo engine with around 557 HP (410 kW). Just like on the facelifted E-Class, the S63 AMG will likely receive a slightly more powerful S-Model with up to 585 HP (430 kW).