Vodafone released new plans:
$40 for 50GB ($5 off, normally $45)
$60 for 80GB + 20,000 Qantas Points
$80 for 100GB + 40,000 Qantas Points
All includes unlimited calls in Australia and 1000 minutes International calls, plus unlimited text. Data is unlimited but throttles down to 1.5Mbps after included data exceeded.
Note bonus data and additional plan discounts ends after 12 months and plan reverts to base plan. Hopefully by then better plans are available to upgrade to.