Joe Rossignol, MacRumors:

Apple has determined that some Apple Watch Series 3 models have an issue causing “edge stripes” to appear on the display after time.

In an internal memo distributed to Genius Bars and Apple Authorized Service Providers, Apple said the issue is to be treated like any other Apple Watch repair. Since the issue appears to be a manufacturing defect, the repair should be free under Apple’s standard one-year limited warranty policy.

If you have a GPS Series 3 Apple Watch, or plan to buy one, take a look at the image in Joe’s post so you know what to look for. Sounds like Apple acknowledges the issue, has your back if you do run into this.