A recent poll by 9to5Mac titled “Which rumored iPhone 7 feature excites you the most?” has “Waterproof/Dustproof” currently leading with 23.5% of the vote. Coming in second is “In-display fingerprint recognition & loss of home button” at 19.56%, and “Wireless charging” is at third with 16.33%.
Fast Company recently reported that the iPhone 7 will not have a headphone jack, and may feature wireless charging and be waterproof (but may not). The iPhone 7 is due for release in Fall 2016.