You can't extrapolate the dates from that initial batch of doses. They are counting on the majority of the vaccinations to be the AstraZeneca vaccine manufactured locally by CSL. This initial batch is to just focus on the front line quarantine and healthcare workers.LOL crunch some numbers and get back to me, they won't even be close to the 2nd last phase by October. Phase 1A is 678,000 eligible people and this country got what 80k doses the other day, 3 weeks apart for jabs takes us to end of March approx for this 80k.
This is from the Australian Government website which was updated today which tells you how long they think it's going to take, months before moving away from priority.
Whether you are in a priority group or not, the best thing you can do is stay up to date and continue to be COVIDSafe. The Australian Government will provide further information about how vaccines will roll out over the coming months.
There is significant demand for safe and effective vaccines to end the COVID-19 pandemic. As vaccines become available, they will go to people in higher risk groups.
October you say, huh, don't even bother thinking about it till 2022 if you're in cattle class and by then you will probably think what is the point TBH.