Apple has announced a refreshed Watch Series 7 with a 1 mm larger display, new case colors, and watchOS 8. The new Watch Series 7 is now much more durable, includes new fitness apps such as Mindfulness, and riding fall detection. The Watch Series 7 also charges 33% faster compared to the Watch Series 6.
https://www.notebookcheck.net/Apple-Watch-Series-7-announced-with-larger-display-new-workout-modes-riding-fall-detection-and-faster-charging-starting-from-US-399.561542.0.html