"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
iPhone 6s Plus Very Difficult to Bend in New Bend Test Video
In the video, the phone is given the same bend test it was given a year ago. FoneFox's Christian simply wraps his hands around the device and attempts to bend it in the middle. While the phone starts to bend under more and more pressure it snaps back to its normal shape once the test is over. Christian notes that he can feel his thumb sink into the back of the device, but that the phone doesn't stay bent.
FoneFox then adds a second person to the test, getting each person to pull one side of the phone. In this situation, the iPhone 6s Plus does bend. However, FoneFox notes that the pressure exerted with two people is unlikely to occur in situations where the phone is in a user's pocket.
For comparison, the iPhone 6 Plus bent in just a couple seconds in the original bend test video, available to watch below.