Like the few months leading up to any big Apple product launch, the last few months have been jam-packed with speculation concerning Apple’s upcoming iPhone – and a whole hell of a lot of buzz. Whether it launches as the iPhone 5 or the new iPhone or some other name completely, there’s a pretty strong chance that there will be lines outside of Apple stores.

And one analyst thinks that the iPhone 5 will be huge. Very huge.

FBR Capital’s Craig Berger thinks that over its life cycle, the iPhone 5 could possibly sell 250 million units. And more importantly, perhaps, that may translate into profits of over $50 per share. He calls the iPhone 5 launch “one of the largest single product opportunities in Apple’s history,” according to a research noted obtained by Forbes.

Not only that, but he expects that the success of the iPhone 5 will help propel chip makers like Qualcomm and Fairchild Semiconductor. Plus, all three carriers (AT&T, Sprint, and Verizon) will obviously benefit from the expected popularity of the new device.

We’ll just have to wait and see just how popular Apple’s newest iPhone really is. It might not be that long of a wait, however. Recent reports place the official release date as September 21st, which is just nine days after the suspected press event where Apple will unveil the new device.

And unlike last year when Apple debuted the iPhone 4S, rumor has it that pre-orders will open up on the same day as the press event this time.

If the iPhone 5 wants to have a strong initial showing, it’s going to have to work hard. Last October, the iPhone 4S sold over 4 million units in the first few days on the shelf.