I raised that question late last year on a separate forum and no-one here knew anything. I quick search of the CASA website and all the literature points to a release of the CAO mid last year...
Have gone through the relevant CAOs (CAO 40.0,82.0) and the Consultation Updates 2011 page :
Civil Aviation Safety Authority - Consultation updates archives and cannot find anything beyond the NPRM, so wtf??
Anyway if anyone can enlighten us it would be much appreciated!!