Apple announces updates to its smartphone lineup every autumn, but the company often has a hard time keeping the details under wraps. Ahead of the official unveiling of the iPhone 17, we've already heard quite a few hints about what may be in store.

The iPhone 17 Pro Max is reportedly getting thicker to accommodate a larger battery. Based on teardowns, the iPhone 16 Pro Max has a 4,685 mAh battery. And in our iPhone 16 Pro Max battery testing, Apple's current premium flagship lasted an average of 17 hours and 35 minutes.

The most talked-about iPhone expected this year is beginning to come into focus. A new leak gives us a key clue as to what it will be like.