"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Apple Store Goes Down Ahead of Expected iPod Refresh
iPods in unreleased colors were first spotted in iTunes 12.2 earlier this month, including a darker blue for the iPod touch, a new gold color for the iPod nano and a brighter pink color for the iPod shuffle. MacRumors subsequently discovered a full lineup of six new colors for the iPod touch, nano and shuffle hidden within iTunes resource files, including silver, space gray, red, bright pink, deep blue and light gold.