The door handle button, the headlight washer nozzles, the sun visors and the spare wheel cover. That's a comprehensive list of the parts that have been carried over from the old G-Class. Apparently there's a bracket underneath that also has the same part number as before, but even the engineers can't remember quite where it is. Everything else - everything - is new.
About time, really. The old G had been around since the dawn of the motor carriage (well, 1979), an old soldier still refusing to desert its post.