Keep You On Task as a Virtual Assistant
The watchOS 4 update adds a ton of new watch faces, but the most impressive one is that you will get a new virtual assistant on your wrist.
The all day assistant watch face is powered by Siri and sits on your Apple Watch screen, showing you upcoming appointments, reminders and appointments.
Basically, you can use the Apple Watch to keep on track during your busy day. This is a watch face, so you don't need to open an app to see it, just raise your wrist and it's there.