Display And Body
The overarching change that's expected to make the iPhone 8 so special is the adoption of a new type of display. To date, the displays on iPhone models have featured a sizable bezel above and below the display. Rumors suggest the iPhone 8 will drastically minimize the bezel, and will sport a display of 5.8 inches. While that would be a bigger display than on the iPhone 7 Plus (pictured), which is 5.5 inches, the minimal bezel would mean the device wouldn't need to be all that large overall. In fact, reports point to the iPhone 8 having roughly the same-size body as the 4.7-inch iPhone 7.
And to make the iPhone 8 even more enticing, rumors suggest that Apple will be going with a super-sharp OLED display -- the first appearance of OLED on an iPhone (which to date have favored LCD Retina displays). Meanwhile, the iPhone 8 may also get a glass and stainless steel casing in contrast to the usual aluminum iPhone body.