The iPhone 8’s dock might work more like the new iPad’s
https://www.theverge.com/circuitbreaker/2017/8/30/16225048/iphone-8-rumor-ui-dock-notch
All the rumors about the upcoming iPhone 8 point to Apple making some fairly big changes to the device’s user interface, with tweaks needed to accommodate the removal of the home button and the addition of a “notch” housing the phone’s camera and sensors at the top of the display.
Bloomberg’s Mark Gurman has a new report on how exactly these changes could be implemented, with Gurman’s sources suggesting that Apple is looking for ways to replace the functionality usually assigned to the home button. (E.g. returning to the home screen, opening up the multitasking interface, and accessing Siri.)