"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
USB2 in Certain PowerMacs?
- According to a Korean site Create Mac, it appears that the drivers for the USB 2.0 chipset in the MDD 1.25 and 1.42 Ghz are updated and confirmed that they do work
Warning is provided indicating that "Installation on other models could render the system inoperable".