https://www.cnet.com/news/apple-2018-iphones-might-not-include-the-headphone-adapter/

Apple might stop bundling a headphone adapter with its 2018 iPhones.

According to a Barclays research note reported by MacRumors on Tuesday, the Lightning to 3.5 mm Headphone Jack Adapter will not be included with the new crop of iPhone models. If true, this would be the first time Apple has removed the adapter since the company cut the headphone jack with the launch of 2016's iPhone 7 and iPhone 7 Plus. Barclays previously reported this in April, and says in the new note that the finding is "confirmed" by Cirrus Logic, a supplier for the adapter.