No mystery here, boys. The aircraft currently do one AKL per day from each of BNE, SYD and MEL.
Equipment in November is A332 out of BNE and B773 out of SYD and MEL.
With the introduction of the A345 on the SYD route from December 1st, the BNE flight will become B773. I speculate that all Australian/NZ flights will become A345 as we take more deliveries.
Rumors of multiple shuttles are incorrect but probably evolved because our roster pairings have changed such that a crew will now spend a few days longer in Oz while doing shuttles on subsequent days. This is to overcome fatigue reported by most crews by keeping them in your time zone longer.
As an aside, I saw our new A345 here in DXB when it arrived this week. Awesome! And yes, Chocks Away, a little more impressive than the 737!