A new leak shows that Apple may be rethinking how iPhone 7's home button will work - unverified photos offer a close look at a button that's just a circle drawn under the glass. This would make it a capacitive touch button, but there's no reason to think it can't continue to operate as a fingerprint reader. At least two companies - Qualcomm and Sonavation - have developed ultrasonic tech that can work from under the glass. This would mean Apple will have to change up the gestures a bit. Currently, a double tap (not press) on the Home key brings the UI lower down so you can reach it...
Source: http://www.gsmarena.com/apple_iphone_7_may_have_a_capacitive_home_key-news-18834.php
