Before you ask (or after you ask on Twitter without having read beyond the headline), no it’s hasn’t broken yet. It’s actually been fairly robust, all things considered. But here’s the official line from Samsung on that,
A limited number of early Galaxy Fold samples were provided to media for review. We have received a few reports regarding the main display on the samples provided. We will thoroughly inspect these units in person to determine the cause of the matter.
Separately, a few reviewers reported having removed the top layer of the display causing damage to the screen. The main display on the Galaxy Fold