The A330's cannot replace the 767 on domestic routes due to the lack of sufficient gates (and airframes) to do so. There are currently 6 A330-200s flying with J* and soon to be 6 -200's flying with QF. Only two of those aircraft would be readily convertible to the J* configuration, the others are in QF LH configuration with Skybeds.
If the 787 is truly going to be delayed until 2011 then some interesting decisions will soon need to be made. One could almost guage the Boards belief in the J* Intl model by what it will do over the next 12 months. If it really wants J* International to expand it will have to source additional A330's from somewhere. If they come from QF then the die will be set. If they don't act then it may indicate a lack of enthusiasm for expanding J* Intl. Interesting times indeed.