According to a source known for accurate Samsung data leaks, Sony is developing a smartphone with six main camera sensors. In front, there will be two sensors.
Details yet, since the device is under development. It is assumed that one of the sensors will be a telephoto lens, one super-wide-angle, one TOF, two monochromes to improve the detail in low light conditions and the main sensor. As for the front-facing cameras, a wide-angle, as in the Google Pixel 3 XL, can be added to help with the basic.
Obviously, this will be the flagship and we will see it not earlier than the end of 2019 and the beginning of 2020. Perhaps its release will take place at the exhibition MWC 2020 in Barcelona.