Japanese blog Macotakara has made a comparison between the supposed front panel of the future iPhone and that of the current iPhone 4S.
The video below shows the rumored new front panel superimposed over the current one and you can see exactly how much the screen of the next iPhone will be increased.
The comparison shows that there could be an increase in height of only a few millimeters, with the width of the device remaining the same.
The height will increase by about 10 mm to a total of 10.3 cm, confirming latest rumors.
Also, the screen would change to 4 inches from the current 3.5 inches, in accordance to latest speculation claiming that the iPhone 5 will come with a larger display.