iPhone 4G in Vietnam seems to run on iPhone OS 4?

Looks like the second iPhone 4G prototype that has gotten lost in translation somewhere, ending up in Vietnam, has been spotted running iPhone OS 4 – or at least, that is what it looks like according to the image above. Could this be just an older version of the iPhone OS displaying a screenshot of the new iPhone OS 4, or is it the real deal? No idea and no answers, but if this stoked your interest, then you would do well to check out our previous iPhone 4G stories.