There's a kneejerk reaction that links anything done in Photoshop to fake when there is no such relationship. While the vast majority of fakes are done in PS, the same is true of actual products.
The question isn't whether the image was created in Photoshop, the question is whether or not the image is a legitimate one. The fact that the image is clearly a .psd file doesn't say anything as to its legitimacy one way or the other.
I suspect some of the considerations for such a determination might include:
- At what rate does Apple revamp it's iPod nano line? (once a year usually around this time)
- What trends have the nano line followed? (smaller, thinner, color screens, features...)
- Is the inclusion of video a feature that Apple is emphasizing across its product line? (Arguably- yes. Most Apple products are video friendly if not videocentric.)
- If so, what design influence would this have on the iPod nano- Would Apple go for a square screen or a wide screen?
- Is the source of the image reliable? (9to5 has been doing alright lately.)
- Does the form factor represented in the images meet these considerations or diverge significantly from them?
It may very well be that the image is a prediction of what the next iPod Nano may look like based on speculation. If that is so then the question would shift from a discussion about the legitimacy of the rendered images to the accuracy of the images.
In any case, the question of whether this image is real or not isn't answered by the fact that it was an image that was processed in PS.