I see you fly in Aus and I can tell you that the schedules do change every 2 years from Advanced class upwards to F3A. The only schedule which hasn'tchanged is sportsman which is intended as an entry level class. This should not be an issue unless you intend to spend flying Sportsman for more than 2 years. Go to the Australian Pattern Association website for more details.

http://www.australianpatternassociation.com.au