Currently, compared to iOS 10, there is a delay between pressing the home button and the phone returning to the home screen. This is because the phone is waiting to see if the button will be pressed again to access multitasking. In iOS 10, the phone didn't wait, meaning that the multitasking animation sometimes jumped unnaturally into place. This, to me, was preferable to having a slight delay.
Fortunately this shouldn't be an issue on the gesture based iPhone 8.
Fortunately this shouldn't be an issue on the gesture based iPhone 8.