We are currently using the official EA tests that were introducted from 1st JULY 2009. 
http://www.equestrian.org.au/site/equestrian/national/downloads/content/attachments/rules/2009_Dressage/All_tests.pdf
The Prepartory level test remain the same (2006 versions are also on the EA national website)

For easy to read explanations and diagrams with caller notes, check out http://www.dressage.net.au/australiatests.html

January 2010 - Eventing has now adopted the EA 2009 test.  In addition they have introduced a new PreNovice level test.

August Members Competition - Prep Freestyle Test & Prelim Freestyle Test