Hey Jen,
According to the ADF flight screening schedule there is 3 DEO flight screenings in October and then ADFA entries for the rest of the year. I am also hoping to get into one of these. If you want to see the schedule yourself go to the link below and click on the link down the bottom of the page.
https://www.airforce.gov.au/Our-People/Careers/Becoming-a-Pilot/Pilot-Selection-Flight/Flight-Screening-Program-Schedule/?RAAF-e9g2z8vIikaumcv6ylDo1q9luRRCcBKo
Cheers