Undoubtedly, Google had only one rear camera on every small and large Pixels model. The company accepted the AI learning and the machine used to create photos that deal with phones with two cameras such as the XS iPhone or three back camera like the Huawei P20 Pro. The second camera could be used for something other than photography as possible.
Drawings of the unliquid 4 XL also show an oval-shaped display for two self-acting cameras such as the new Galaxy S10 Plus. Pixels 3 are of course not picked and one of the largest is available on any phone at the Pixel 3 XL
A reader does not show the fingerprint drawing on his back enough. This deficiency could indicate a fingerprint reader on the screen at the first phone Pixels like the OnePlus 6T and Galaxy S10.
Of course, the drawing was not verified so as to contain salt grains. However, it is still fun to think about it.
Google didn't immediately reply to your request.