Rumour has it that Apple will introduce a triple lens camera in a new large, square module. Another great feature will be the A13 processor. The Apple processors are known as incredibly powerful and ahead of the competition, therefore it will be hard for other phone manufacturers to compete with this.
Besides the camera layout, the design of the new iPhone will be very similar to iPhone XS. The phone will feature an LCD screen and probably a USB-C port. It might also have Apple Pencil support, which is a complete novelty for an Apple iPhone.