Prior to today's event, iPad Pro rumors suggested Apple would remove the headphone jack from the updated tablet, and as it turns out, those rumors were accurate.
Apple's newly redesigned 11 and 12.9-inch iPad Pro models do not feature a headphone jack, with the port now officially eliminated from all flagship iPhone and iPad models.
Apple's new tablets are just 5.9mm thick, a slim size that was likely enabled through the removal of the headphone jack. To allow customers to use 3.5mm headphones with their new tablets, Apple is selling a $9 USB-C to 3.5mm headphone jack, which will plug in to the USB-C port on the bottom of the device.
The USB-C to 3.5mm headphone jack is not included with an iPad Pro purchase and must be bought separately if you want to use 3.5mm headphones with the new tablet.
The headphone jack has been missing from the iPhone since the introduction of the iPhone 7, which upset many customers at the time of its removal. Since then, people have become accustomed to using Bluetooth headphones like the AirPods, which may be why Apple felt that it was also time to eliminate the port from its new iPads as well.
Apple's iPad Pro models feature its latest technology with edge-to-edge displays, Face ID, super fast A12X bionic chips, and USB-C connectivity rather than a Lightning port.