Rumor has it this is the 2010 Mercedes S63 AMG or the S65. Really, it's only the engines that set them apart. There's the ubiquitous 6.2-liter V8 or a fancy 6.0-liter twin turbo V12.

The plain old 2010 Mercedes S-Class was only just unveiled last week during, but purposefully not at, the New York Auto Show. Now, 4wheelsnews brings us these shots, which supposedly show both the S63 and 2010 Mercedes S65 AMG. Mercedes has stated the S63 will make 518 HP, while the much more expensive V12 S65 will produce 604 HP.

Also expect the new S-Class's fancy LED lights and revised interior, here even nicer in Leather-‘n-Carbon AMG trim. Added to that will be the de rigueur beefed-up bodykit. [via CarandDriver]