https://www.theguardian.com/technology/2018/sep/12/apple-watch-series-4-will-have-edge-to-edge-screen-and-health-features

Company’s new smartwatch will launch with improved health-tracking abilities and updated operating system, watchOS 5

The new Apple Watch will be launched with an edge-to-edge screen and ECG support, the company has announced at an event in San Francisco.