I would be willing to bet that this is representative of the overall design. Makes sense for the camera plateau to be only 3/4 of the back since the hinge mechanism would take the rest of that space. Looks like the "front" display will have a bit more rounded edges then we are used to on an iPhone. Optimizing for an unfolded experience likely drove that design change to eliminate sharp edges when holding it unfolded.Some 18 Pro and Foldable dummy models.
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Don’t know if it’s real, because the Foldable is not showing camera cutouts and MagSafe, while the Pro’s do have that.
Volume buttons are on top with the power/touch ID on the side. Interesting choice since iPhones used to have the opposite arrangement with power on top and volume on the side. Also interesting that this model lacks the magsafe ring. Likely just wasn't needed for this model.