In a very brief statement, Apple says that a small number of iPhone Duo units have an issue impacting the inner display. It does not appear to be that many units impacted.
Example of how and where the iPhone Duo hinge is failing, breaking the screen
Example of how and where the iPhone Duo hinge is failing, breaking the screen
Over the weekend, there have been accounts on social media discussing iPhone Duo screen failures. They are all remarkably similar, and appear to be because of a hinge failure.
On Monday afternoon, Apple issued a brief statement about the matter.