The Australian Prime Minister, Scott Morrison, has indicated that Australians who are currently stuck overseas, will soon be able to return to Australia, with Home Quarantine being available instead of using the Hotel Quarantine system.
One condition being that they are fully vaccinated, presumably with the equivalent of the authorised Australian vaccines.
Presumably airlines will be permitted to arrive with full passengers, assuming all are double vaccinated. This should be in addition to the current capped numbers that are allowed to enter.