If I give you two very good reasons why that image is obviously fake, will you do me the favor of no longer posting it to every thread you can justify? I've seen you post it to more than one thread, and each time it strikes me as a fake. Either you're trying to dupe us here on this site or someone is duping you. The latter is only marginally more justifiable than the former, btw.
I've done professional graphic design work and there's this concept in design concerning padding of an image. It's not really something I've seen taught, but rather something you get a good sense of the more you do design work. For example, if you have a logo or image in a box, an experienced graphic designer knows how to float the logo in the box so there's just the right amount of padding around the logo, between it and the box. Not too much, not too little. A designer with a good eye can get it so it floats there, just right, looks right and feels right. It's hard to explain, but it's one of those esoteric design things that separates the amateurs from the pros. You know it when you see it.
Look at the buttons (except the Finder button) on the iPhone. Those images float just right in their button frames. A skilled and experienced pro did those. Now look at the Finder button. That's clunky. It's just... not right. The top lines bump the edges and the sides don't. The eyes are too close to the edges. It's just off. Someone else with considerably less design skills did that button.
The other reason I'm sure this is fake is that companies are extraordinarily protective of their branding and logos. Bigger companies frequently produce and distribute design bibles to their marketing people. This bible defines right down to the very last pixel, how any logo or branding element is allowed to be used in any medium, the colors, the background, the surrounding elements, etc. This is done to present and maintain a consistent look and it's a very good idea.
There is no way in hell Apple is going to present one of their most famous branding elements (the Mac Finder face) cropped and anamorphically squeezed like that. It's awful. It's laughable. That's not a button designed by Apple.
Now, before you counter with the possibility that this button design is a prototype, please consider that the rest of the image looks like a polished marketing image--clean and clear and good color and very attractive. If it were real, it would stand to reason that it would be a final marketing image which would mean that no traces of early work or prototype button designs would be a part of it.
So, it's fake. Sorry. Whoever this friend is who claims to work for Apple and has passed this along to you is pulling a fast one on you.