https://wccftech.com/case-maker-shares-molds-of-all-iphone-13-models-show-larger-camera-module-more/

While Apple will not announce the iPhone 13 for another three months or so, accessory makers have already begun producing cases of the device. Smartphone accessory makers have started making cases for the forthcoming iPhone 13 based on molds or chassis models which gives them the required dimensions and design of the device.

As mentioned earlier, a smartphone accessory maker has seen fit to produce cases based on molds of the iPhone 13 series. These chassis models or molds provide them with adequate information and detail pertaining to the devices which allows them to manufacture cases ahead of time. Once such a brand decided named Benks to share the picture of the iPhone 13 molds that gives us a clear look at how big the iPhone 13 will be or how large the camera module will get.