In September 2019 ACMA published its rolling Five Year Spectrum Outlook 2019-23. It covered among other things, its plans for mmWave spectrum.
28 GHz (27.5–29.5 GHz)
Plans to enable use of fixed wireless access services across the band, sharing the spectrum with fixed satellite earth stations. Change to spectrum allocation
arrangements by Q1 2021.
26 GHz (24.25–27.5 GHz)
A draft spectrum reallocation recommendation has been made to the Minister for Communications to enable use of spectrum in this range for wireless broadband. Proposed allocations in Q1 2021.