The variation in question comes in two forms. First, the upper "wishbone" is, in fact, two distinct links, each with its own ball joint. The upper steering pivot point is a virtual one that exists in space outboard of the two ball joints, where the two links would intersect if they were longer.
The second difference is the use of air springs instead of coils. The red hose and the wire next to it are part of the control system. RS Adaptive Air Suspension is standard on the RS 7, and it does an excellent job of smoothing the ride while still keeping the body flat and stable.