The 9.7-inch iPad model released in 2018 does ship with a 3.5mm headphone jack. Apple discontinued the headphone jack on its iPhone models, but it still remains on all iPad models. This includes both the 12.9-inch and 10.5-inch iPad Pro models and iPad mini 4.
Does the 9.7-inch iPad (2018) have a headphone jack?
Taxonomy upgrade extras: