"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
New Apple Mouse and Keyboard... Soon
Despite rumors to the contrary, the new devices will not bring more exotic features to the Apple accessories. According to reports, the new items will not support Bluetooth and the mouse will still only sport one button.
Updates may come alongside eMac updates -- which are rumored to reach 1GHz shortly.