Is this the official ad for the iPhone 5 that Apple will run following their big announcement tomorrow afternoon? Not likely. But it is a pretty well produced video that outlines many of the possible (probable) specs of the new device.

“All New Design,” it touts. It then goes on to give an incredibly detailed look into the various specs of Apple’s much-anticipated phone: “Unibody construction, 9mm taller, 22% thinner, 4″ 16:9 widescreen display, next generation LTE wireless communication” and so on and so forth.

All the while a bouncy song graces the background, one which I can say doesn’t sound too far off something that Apple would throw into an advert. The YouTube description reads that it is the “official video leaked by an anonymous Apple employee.” It’s currently making the rounds on Twitter, although nobody could ever accuse the Twitterverse of much skepticism.

Check it out for yourself:

Although it would be a first for Apple to produce a nearly three-minute commercial, it does look like something that they may show as a press companion for their announcement event (maybe, kind of stretching it a bit). We’re still pretty skeptical about it’s legitimacy, however.

But if you’re looking for a decent rumor roundup that hits a lot of the bases, it’s pretty solid. We’re pretty convinced that the iPhone 5 will include that bigger screen, mini dock connector, and LTE.

Of course, all will be revealed tomorrow during the official event. We’ll be covering it as it happens, so check back with us tomorrow at 1 pm ET. If you’re still craving iPhone 5 rumors, this is the place to go.