Samsung filed a patent with the KIPO (Korean Intellectual Property Office) and its details have just been published, the following mockup render comes from LetsGoDigital.
Patent description: the present design is a display module with a display panel attached to the back of the cover window used in a smartphone. The cover window includes a protruding portion at the top center and agreed to the protruding portion. By placing the cameras, speakers etc in there, the screen size can be maximized while creating a rectangle screen.