A while back Joyce denied that JQ would ever operate longhaul to the US. At the time I commented on this forum that once that was said it was a certainty to happen.
The AKL-SFO is the beginning of course. AKL-LAX will follow not long after, especially after the route has been proven by the red tail A330 (easier for ETOPS ect ect - not that there is anything special about the route, or QF flying it)
F***** me, sometimes I wish they would just wind up QF and make it all Jetstar and just get it over with