"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Next Generation Video iPod?
Of interest, PortalPlayer's CEO Gary Johnson stated that the next generation video iPod chip has yet to be decided and remains "up for grabs".
According to another eeTimes article both the PortalPlayer chip and the Samsung chip are described as "ARM-based" processors, indicating that there is some code portability between chips.
The next-generation Video iPod has long been rumored to be a touch-screen iPod, but the most recent claims have indicated that it has run into technical difficulties delaying its release until (at least) late 2006.