Hi Reece,
Yes, it was indeed released - at least for Europe - a while ago, but it looks like it takes a bit longer to get out there to Australia.
With a global distribution of a product, there really isn't one universal date on which they hit the shops, unfortunatly. Thel distributers might need more time. But as far as the addon itself goes, that has been released, so the release date hasn't slipped, but the distribution just takes more time than planned, the way I see it.
Bad luck...
Regards,
Fred