"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
P.A. Semi Acquisition for iPod and iPhone Chips
PA Semi is going to do system-on-chips for iPhones and iPods,Apple acquired P.A. Semi in late April, and reports had suggested that Apple was not interested in any of their current technology. This generated some speculation about what specific project they had in mind when acquiring the company.