"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Apple Announces iPad Mini 4 for $399, Lowers iPad Mini 2 Price to $269
The new tablet also has all of the expected improvements in its camera, with advanced optics, an improved sensor, and an Apple‑designed image signal processor. The iPad Mini 4 includes Touch ID and uses new iOS 9 features like Slide Over, Split View, and Picture in Picture to provide users with a more robust and economical mobile experience.
iPad Mini 4 is available in Space Gray, Gold, and Silver for $399 (16GB), $499 (64GB), and $599 (128GB), including cellular options. Apple has dropped the iPad mini 3 from its lineup, while the iPad mini 2 is available for $269.