I'd be surprised if any QF A330's go to Jetstar. The-300's are a hit with the punters, especially with the skybed and the IFE (when it is working properly, but they seem to have ironed most of the kinks out) and the -200s going to Perth and back are generating a substantial amount of the domestic operations profits. (note that you don't see J* going to Perth... there is a reason for that...)
Time will tell I guess.