Hi Dick,
It is my belief that AirServices embarked on a project to do this over a year ago, however no updates have been forthcoming that I have been made aware of, however it was expected to take two years.
In the USA, this information is purchased by Garmin from multiple sources and those sources don’t exist in Australia, so it is somewhat easier to achieve over there.
I trust that this information aligns with your recent research on this topic.
Cheers.