I wrote a few weeks ago about the impending introduction of the new uniform Evidence Act.
One of the problems will be knowing what merely codifies existing law, and what are the significant changes.
For those who want to grapple with this issue, a good starting point is the VLRC material (or the ALRC material).
The Discussion Paper and Final Report discuss significant areas, and also note the small variations between jurisdictions. (There are only a few.)
But the most useful document is Introduction the uniform Evidence Act: Significant Changes, just published by the Judicial College of Victoria.
The College also has flowcharts listed for separate download.