In the States, Delta Airlines has deferred its 787 order (formerly ordered by Northwest pre-merger) to something like 2020 or beyond in favor of getting more 777s. Delta's CEO Richard Anderson has clearly stated that the 777 provides better economics than the 787 and Delta already has sufficient experience using the 777 and will get more of them.
I agree, the fact that Qantas have not ordered the 777-300 is astounding considering the Asian competition and the flight ranges involved. Plus, those 744s are looking their age - time to get some newer looking airplanes to compete with the Asian birds...