Changes that can be immediately spotted at the front is the new headlight graphics and fog lamp-less bumper lower side intake. The rest of front bumper looks the same though. Maybe the Bimmer fans can help me spotting it.
Changes to the rear is similarly hard to spot. Apart from the previously mentioned tail light graphics, I don't see any other changes.
However, some updates are expected in powertrain front. While the gasoline engines are likely a carry-over item, the diesel are rumored to include new tri-turbo 3 litres six cylinder engine that produced 345hp. More photos and comparison to the current model after the jump.