There is going to be 5 classes of Aircraft maintenance technician certificate, depending on the class you can have different maintenance privileges.
https://www.casa.gov.au/rules/regulatory-framework/casr/part-43-casr-maintenance-aircraft-private-and-aerial-work-operations#Extensiveconsultation
Hopefully CASA release it in a reasonable timeframe.
This is a great thing, especially after RAAus stuffed up Group G by not allowing owner maintenance