There are still plenty of time before Samsung launches the Galaxy Z Flip successor, but that doesn't mean that development hasn't started already. In fact, according to a design patent at WIPO (World Intellectual Property Office), Samsung is looking into two potential designs both of which include a triple-camera module on the back. The Model A features a familiar design with horizontal camera placement, but due to the bigger module, the secondary screen used for notifications looks a little bit smaller. Whereas Model B adopts a vertical stack giving much more room for the mini OLED...
Source: https://www.gsmarena.com/the_next_galaxy_z_flip_could_come_with_three_cameras_on_its_back_patent_suggests-news-42996.php