From the ATSB website.
Updated: 9 August 2016
Completion of the draft investigation report has been delayed by competing team member priorities and workload and the requirement for additional investigative work. This includes seeking further information from a number of sources.
The report is now anticipated for release to directly involved parties (DIP) for comment in October 2016. Feedback from those parties over the 28-day DIP period on the factual accuracy of the draft report will be considered for inclusion in the final report