Apple's iPhone event: What you need to know

The tech giant will be unveiling its latest iPhones, Apple Watch and Apple TV on Tuesday

Apple Inc. on Tuesday will hold its most important product event in years, unveiling the newest iPhones, Apple Watch and Apple TV at its new headquarters in Cupertino, Calif. Investors and consumers around the world will tune in to see the latest features. Here’s what you need to know:

Apple does this every September, so what’s the big deal?

This event offers up several firsts. On the product side, it marks the first time Apple will unveil three iPhones at its fall showcase. One will be a high-end model with new display and sensors that will be called the iPhone