Looks like this deal is back with a different coupon code.
Includes .com.au, .id.au, .org.au, .net.au, .asn.au
Copied from their website:
As a proud 100% Aussie owned and operated business,
we wanted to offer other Australians a simple way to get started online.
So we decided to give away 10,000 Australian domain names FREE for one year.