I just got an email from Gaia GPS about the release of new topo maps for Victoria.
Per the email:
"This colorful layer utilizes the most current maps available from official government sources. The end result is a mosaic of 1:100k, 1:50k, and 1:25k topo maps, all sourced from the Victoria Department of Environment, Land, Water, and Planning. The 1:25k maps were published in April 2017, the 1:50k maps in June 2017, and the 1:100k maps in February 2018."
https://blog.gaiagps.com/new-topo-maps-for-australia/?utm_source=newsletter&utm_medium=email&utm_campaign=august-newsletter-members&utm_content=australia
The downside is you need a "Premium" subscription to access the new maps.