iPhone 5: Image from the Production of Wintek

iPhone 5 - Currently making the rounds a picture, which is supposed to show the review of the touchscreens for the iPhone 5. The photo was supposedly taken at Wintek who had been responsible for the production of displays for the iPhone 4.
On the photos can be seen clearly that the display is slightly wider and the Home button takes a little more space. How much truth is in this picture is still