UPDATE - This from the PM yesterday.

And it's very important that people understand that requirement if they're seeking to come to Australia. But if you're double vaccinated, we look forward to welcoming you back to Australia, and I know the tourism industry will be looking forward to that, and over the next two weeks they will have the opportunity both for visitors to be coming and for them to be gearing up to welcome international visitors back to Australia.

Your visa is one thing, but your entry into Australia requires you also to be double vaccinated. And I think events earlier in the year should have sent a very clear message, I think, to everyone around the world that that is the requirement to enter into Australia.

But the fact is, here in Australia, the variant is here in Australia. And for those who are coming in who are double vaccinated, they don't present any greater risk than those who are already here in Australia. So it's a sensible and I think very important move for us to make as we sort of, as best as we possibly can this year, drive Australia back to a position of as much normality as as we can achieve. So we've been careful. That's why.