Nothing we probably don't already know, but preliminary ATSB report is here:
https://www.atsb.gov.au/publications...r/ao-2019-008/
A bit more information here:
ATSB begins investigation into Erickson Aircrane incident
Ongoing and serious bushfires in Victoria probably mean that recovery will be very much a secondary task for the remaining aircraft - if indeed it's used at all.