"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Apple Event Discounts - 10% off iPods, iMac Discounts, iPod Giveaway
In a unique move, Apple is also offering 10% iPods and Accessories at the Online Apple Store today.
Update: The 10% Discount is no longer available (was only available for one day). But, Apple is also giving away an iPod-a-Day between November 28th to December 24th for new registrants to the iTunes Music Store.