Apple Pro has posted photos of a partially assembled 4th generation white iPhone. As best we can tell, the images are of a white front plate, LCD screen and metal casing put together. All these parts have been circulating in the past, so it appears they simply put them together to show what a completed unit might look like. (via Engadget)
The case contains the screwholes seen in the Gizmodo leak. Apple is widely expected to introduce the next generation iPhone at WWDC in June.