It used to be that if you wanted a Mercedes-Benz S-Class, your choice pretty much came down to which engine you wanted, and that was that. But into the new S-Class, Mercedes is integrating several other model lines and extending its flagship family (both literally and figuratively) as far as it will stretch.

In addition to the sedan (already available in two wheelbase lengths in certain markets, in only the longer one in ours) Mercedes is already offering the new S-Class coupe and will soon launch a convertible version as well. But that's the end of the story. Not even close. Soon it will launch two ultra-luxurious, extended-wheelbase models: one called the Maybach and one called the Pullman. It's the former which we appear to have here in this latest spy video from the Nürburgring.

Replacing the previous Maybach 57, the new S-Class Maybach is expected to be based on the S65 AMG, keeping its 621-horsepower twin-turbo V12 but adding more space in the back (as evidenced by the modified C-pillar and rear side glass) and even more upscale accommodations. That will make it even heftier as well, but as you can see from this clip, Benz is keen to keep it handling on an even keel. Expect the new Maybach to arrive sometime next year, with the Pullman to follow in the place of the previous Maybach 62.