Up front, the grille and lights look much lower than those of the tall and proud current model. They also look more slender, especially the headlights. This results in the updated S-Class looking like a lower, wider car than it is. This design is already used by the CLS and the A-Class.
At the back, the S-Class takes another cue from the CLS in the layout of the taillights. The vertical-oriented units are gone in favor of slim horizontal lights. Again, these help to make the S-Class look lower and wider. As for the mid-section of the car, it looks mostly like the current car, hence why we believe this will just be a very minor refresh.
Since the S-Class was just recently updated, we're not expecting to see the production version of this S-Class for a couple of years, possibly in 2020. We also predict that the base twin-turbo 3.0-liter V6 on the current model will be replaced by the turbocharged straight-6 found in the CLS450. The twin-turbo 4.0-liter V8 though will certainly stick around.