Unfortunately, new developments are absent as well: nothing new about the engines, nothing new about about the body... Remember, the car is not expected to arrive until early 2011 (late 2010, at best), so we will have to wait some more until the mystery surrounding the M is revealed.
Until then, we can only tell you the new ML will be a bit different in terms of size than the current one, as it might be a few inches shorter. According to
For engines, Mercedes will turn to both in-use units and new ones. The petrol engines will likely include units with displacements ranging from 3.5l to 6.2l, with power outputs ranging from 272 to 510 hp. For the diesel version, engines are expected to be in the 3.0l – 4.0l range, with power outputs of 190 to 306+ hp.
Mercedes is also said to add a newer version of the hybrid system, which will probably be more fuel efficient than the current ML 450 Hybrid.