Very occasionally, it still does happen.
Have seen this one, as per below.
Usually, its the very last SYD - MEL one, dep SYD just before curfew, arr MEL 23.55pm.
As I stay at hotels, late check in is harder with the DIY for Ibis Budget Melbourne Airport, or late check in, or early check in for the new Ibis at Melbourne Airport (pay extra), this deters me.
But I would love to try the A330 in J for the last time, before QF retires them sooner or later
Guess, Elanshin, if you do like the A330 as I do for Aus dom flights, maybe it might be worth getting these before they are retired, and then everything QFd is the A220.
They might need the 330 to carry on from say, SIN - SYD - MEL, or MEL - SYD - SIN, but dont want to put on "dom pax on int flight", so they just fly the 330 forward and back, maybe with mostly freight.
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They have also been doing SIN - PER as QFi, then PER - MEL totally as QFd, can tell on flightaware.com, track incoming flight, into PER, its sometimes SIN - PER - MEL, but the PER - MEL is totally a QFd flight.