The display would have slightly thinner bezels-about 0.9 thinner than the current ones and the notch, if finalized, would be a little wider than the one on OnePlus 6, for comparison, but still smaller than the one today. It will make a larger display-6.7, "but the body would be slightly higher and wider, too. Already creating a square shape with its quad-camera design, the iPhone 12 Pro Max would still have a LiDAR sensor, but it could be positioned differently, as we have already pointed out. The camera configuration is still not final. And eventually, the speaker grid would take on a different look as the loudspeaker is positioned differently.
It is a pretty big leak and considering that the CAD source says that the design is not finished, so we recommend you don't hold your breath as certain specifics that change before you start.