Apple has announced that the company will no longer include a space free headphone dongle in the iPhone boxes.
The 3.5mm dongle is no longer a free accessory and the new iPhones won’t ship with Apple's own fast Lightning to 3.5mm audio jack adapter. This includes the iPhone XS, XS Max, XR, and the iPhone 8, which used to include the free dongle.
Granted, the audio jack dongle included in prior iPhones was not the longest-lasting accessory and definitely did not include features like a DAC or audio enhancements. It was a means of being able to fall back on your wired headphones or use the wired function of your wireless headphones (when they're out of charge, for example).
Instead, Apple will still sell you the dongle separately, despite it being the least expensive dongle that Apple sells, it still comes at a cost now.