Local reports here in Perth, Western Australia, indicate that until these extra ordered a/c arrive SIA will be reducing their 21 SIN-PER-SIN flights/week because the B777s are required for unexpected premium traffic growth in SE & East Asia. As far as I know the SIN-PER-SIN flights are making money but perhaps not in the higher yield areas.
Apparently CX is facing similar "problems", with Aus pax being mainly tourist and VF&R so is also looking to service their higher yielding business pax by reducing flights downunder.
Could be an opportunity for QF to fill the gaps.
Anyone have any definite ideas as to what is happening in this area?