I have no doubt that the box exists. Sure, it might have been additionally tweaked in Photoshop, but I'm betting that the tweaks were small.
However, I'm betting that the copy on the box isn't anything you'll see either on any Apple web site, or on any box in a store. My guess: it's a prop some marketing guy (who has no masters, believe me) had put together for a demo.
I've done it dozens of times. You stand in front of management (or worse, the board of directors), and try to convince them to pony up the dineiro for a new project. So you make it seem as alluring and interesting as possible. It's all smoke and mirrors, sure, but everyone sitting around the table knows that it's just an empty idea. If they like it, you'll find a hundred grand in your budget and you'll get started.
By the time the product actually hits the shelves, you've had to confront that awful beast -- reality -- and your final product bears sometimes little resemblance to your original demo. Sometimes you have to take out nifty little dream features, like, say, the video capabilities of the iPod. Or the slot that spit out twenty dollar bills.
I'm not holding my breath. There's no proof that this was a demo that even came from inside Apple. It might be a graphic designer showing a client the kinds of things he's capable of. Even worse, it might be a STUDENT designer, building his portfolio with dummy products. Haven't you ever seen all the fake products that student designers create packaging for?