You can confirm from the photo that the back of the P30 Pro is made of glass and equipped with four cameras. The images once again show three rear cameras in a vertical orientation, including that square lens at the bottom that might be a 10x optical zoom sensor.
There is a “small exclamation mark” next to the camera, which is distributed with a flash, a laser sensor, and a fourth camera. There’s speculation that it could be a Time of Flight (ToF) sensor.
About specs, the Huawei P30 and P30 Pro will be equipped with the Kirin 980 SoC, of which the P30 Pro has a battery capacity of 4200 mAh and no 3.5 mm headphone jack.