I was not talking about displayed actual IAS, I was talking about the controller knowing what is in the glareshield window, whether that is Altitude or set IAS. There are still many RPT aircraft that don't have autopilot settings linked to the ADSB signal, or lack a settable IAS window all together. So even if Airservices activated this it would not display as the aircraft is not sending the information. Most of the older turboprops would fit into this group, that is the majority of RPT turboprops in Australia (pre -400 Dash, SAAB and Metro, F50), the jet fleet is more modern so not many would be old enough to not have the link.