The unofficial concept renders confirm previous rumors which predicted that Apple's new smartwatch would receive a drastic redesign. The purported boxy appearance is quite plausible since it is reminiscent of the latest generation of iPhones.
https://www.notebookcheck.net/New-Apple-Watch-Series-7-CAD-renders-showcase-the-boxy-design-of-the-upcoming-wearable.555753.0.html