iOS 10 on iPhone 7 vs iOS 11 on the iPhone 8 Concept

How will iOS 11 look and feel on the iPhone 8? Based on the rumours, here's a quick mockup of how WhatsApp could look on the new iPhone running iOS 11.

Couple of questions:

1) Will there be a virtual home button? Perhaps 3D touching the tab bar could work, or maybe the middle icon will be removed in favour of a virtual home button.

2) Where will the time be displayed? Below the sensor array?