Benjamin Mayo, writing for 9 to 5 Mac:

The iPhone 7 had been rumored to be dropping the analog 3.5 mm headphone jack, in favour of wireless Bluetooth or Lightning cable headphones for audio output. However, a new iPhone 7 component leak posted on Weibo disagrees with previous reports, depicting a board that includes a 3.5mm jack (in the top right of the photo above).

This gives everyone another year, at least, to prepare for the inevitable.