I roughly calculated about 20 additional airframes after the B734's have been replaced. I can see them being replaced by the earlier QF 738's, roughly 10 or so. It will still be an increase to mainline, but I think only by about 10 or so.
Rammel - while I understand you're referring more to the short-haul order QF have just made for both themselves and J*, has there been consideration of the six (new) A330-203 deliveries mainline are expecting? I believe VH-EBG is on the way, with EBH-EBL scheduled for delivery to Qantas over the next six-nine months (could be wrong). I think the order was for eight in total, with EBE and EBF going to J* Int, and EBG-EBL to QF.
Would be nice to see mainline getting some capacity too, I agree