Macrumors is posting the screenshot of what appears to be iPhone 3.0's video recording interface. It looks pretty basic but indicates that it will be part of the Camera.app.
The video recording is not presently functional in iPhone 3.0 beta, and the interface is not accessible by default. Only when configuration files were modified telling the firmware that a Video Camera was present will this interface appear.
Other interesting capabilities found in the configuration files include "auto-focus camera", "magnetometer" (digital compass), and "Voice Control"
