Dave Rennie is free to take up his role with the Wallabies, after agreeing on an early release with Scottish club Glasgow Warriors.
The former Chiefs coach wasn't due in Australia until July 1, but with European rugby under coronavirus shutdown, Rennie will get an extra month of preparation.
The Pro14 league was suspended in mid-March, as COVID-19 spread across the continent.
Glasgow managing director Nathan Bombrys says the decision was completely pragmatic.
"With sport in Australia planning to return soon, making the change now will also allow Dave to begin his new role as head coach of the Australian national team," Bombrys says.
"We are grateful to Dave for everything he has done for our club over the past three seasons and particularly for how he has been supportive of the current situation, as well as his willingness to share his vast coaching knowledge with all of our coaches."
Rugby.com.au reports Rennie has been in constant discussions with his Wallabies assistant coaches, as they plan for a potential Bledisloe Cup series, which looks more likely as a trans-Tasman bubble nears.
When Rennie and wife Stephanie will travel to Australia remains unclear, although reports suggest he will depart at the earliest opportunity.
They will likely face two weeks in isolation upon arrival in Sydney.
Last month, Rennie was reportedly reconsidering his appointment, after then-chief executive Raelene Castle resigned, but the 56-year-old appears focused on turning the Wallabies around.
