Independent FRONT suspension ONLY, the rear is a SRA...
Well there was a couple prototypes built with SRA's and a few with IRS. It's built on the ML platform, so I wouldn't be surprised if the the Grand wasnt much more than a rebadged ML320 or ML500 so that would mean independent all the way around; it would save DM a bunch of money.
The new WK is not going to be built on the ML platform or have indepenent rear suspension. The new ML will be buiilt on the WK platform. The WK is rumored to have IFS and a SRA from the numerous reports and also from insiders at the plants. It will also have the new HEMI as an engine option.
Whats the big problem with IFS, they only use that on Baja racers and military vehicles the Hummer. We all know how terribly those things perform offroad. Besides, who buys a Grand for off-roading? Yes its nice to be able to do it but there are better choices for dedicated off road vehicles. If Chrysler doesn't sell enough vehicles the whole line may disappear. Oh, a hemi might be nice.
The Hummer does well off road because it's got a crapload of ground clearance and some sort of locking differentials front and rear. The thing doesn't articulate for anything. Most Baja racers are 2wd and I'd be really surprised to see a solid axle on one.
Who buys a grand for off-roading? Me. When my Subaru sells I'm going to replace it with some form of Jeep (haven't decided yet) but I'm thinking about getting another Grand.