Having said that, there is a video on YouTube that claims the iPhone 5 (which frankly, shot under such poor lighting conditions, makes the handset in question look more like an iPhone 4 instead) was recorded in action, switching GPUs in the process under the System Settings that leads to a special “Developers” tab.
A “Developers” tab, hmmm? Does that point towards it being the “lost” prototype that allows partners of Apple to test the graphics performance of the device? Perhaps, as the preference pane displays the ability to switch between SGX535 and SGX545, whereby both graphics processors hail from Imagination Technologies.
I personally think that this is a fake video with a faux “Developer” application. What do you think?