Overall QF A330 fleet utilisation following the latest network changes will be pretty much hours neutral. Gains approximate losses.
Not so good for B744 tho...
That's basically it. Broadly speaking, the A330s will be cascaded onto routes losing their B747s:
SYD-BKK daily requires 1 A330
MEL-HKG daily requires 1 A330
SYD-PER daily requires 0.5 A330s
SYD-NRT daily requires 1 A330 (I may be double-counting this one?)
The following A330s have been freed to cover this:
SIN-BOM frees 0.5 A330s
AKL-LAX frees 2 A330s
LAX-JFK reverting to Jumbo does not free any A330s due to its schedule.
It's late so I may be missing something here, but this is the broad jist of it.