According to reliable tipster @evleaks, the Huawei P30 "promises to be another imaging powerhouse" with three rear cameras consisting of a 40MP main sensor, 5x lossless zoom and a 24MP front-facing camera. While the setup can be found on the current P20 Pro and Mate 20 Pro, the camera modules may come with new and improved sensors.
Since the P20 Pro and Mate 20 Pro already deliver outstanding image quality, the bar has been set higher for the upcoming P30 series.