According to reports from KGI Securities’ Ming Chi-Kuo and iDrop news, Apple is indeed reducing the bezels on the iPhone 8 just like Samsung Galaxy S8. Pictures released by iDrop shows that the home button with TouchID is also not present in the front. Instead, there is a MacBook Pro-like Touchbar called function area which will keep changing as apps usage.
This means that if the iPhone 8 comes at a size of 5.8-inches (as speculated), then the usable display real estate will be around 5.15-inches thanks to the function area.
The function area is expected to offer features such as dynamic buttons, similar to that of the Touch Bar on the MacBook Pro. For instance, the function area could show media controls, accept/decline buttons for calls, sharing options in Safari, and much more. The renders released by iDrop also shows things such as editing tools in the Photos app being moved to the function area.
Interestingly, the Touch ID may be placed in the function area. More than anything, these renders show how well the nearly bezel-less design lends itself to the implementation of a function area. Several reports have earlier tried to hint what the next iPhone 8 will look like.