"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Aluminum iPod nano?
According to their sources, the move is due scratching complaints for the existing iPod nano. The iPod mini, which the nano replaced, had been constructed with aluminum enclosures. In addition to aluminum enclosures, the upcoming nano is expected to also come in a number of colors with a capacity up to 8GB.
Meanwhile, Analysts have speculated that an iPod nano revision is not expected until November of this year. This represents a delay which is attributed to the recent change in chip suppliers.