There's one crucial reason you're going to want the next iPhone: The camera is getting its biggest upgrade in years

YouTube/Dave Lee

• Apple is expected to announce a new lineup of smartphones in September.
• We have a good idea of what to expect from Apple's next iPhones, which we're hearing could be called "iPhone 11," "iPhone 11 Pro," and "iPhone 11 Pro Max."
• By all accounts, the biggest difference between last year's phones and the iPhone 11 will be the camera system, which appears to be getting an upgrade in the form of a third, wide-angle lens.
• Ask any smartphone owner with an ultra-wide-angle camera: It's a must-have feature these days.
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August is almost at an end, which means new iPhones are right around the corner.

Apple usually holds an event in September to announce its new iPhones. This year, we're expecting an "iPhone 11," an "iPhone 11 Pro," and an "iPhone 11 Pro Max."

Read more: Of the 3 new iPhones coming in September, the 'iPhone 11 Pro' will be the best for most people - here's why

The iPhone 11 is rumored to be the follow-up the iPhone XR; its rear-camera system is getting an upgrade from one lens to two. The iPhone 11 and 11 Pro, which are said to succeed the iPhone XS and XS Max, are said to be getting a more significant camera upgrade, from two lenses to three.

So, what's so interesting about that third lens?

Here's what we know about the rumored cameras in the iPhone 11 lineup, and why they sound like such a significant upgrade.