Chris Jackson via Getty Images Prince Harry and Meghan Markle announce their engagement at Kensington Palace on November 27, 2017.
They were driven to Admiralty House, the Sydney Harbour residence of Governor-General Peter Cosgrove - who is the Queen's representative in Australia.
A new royal baby is always happy news but it's particularly poignant for Harry and Meghan, who have both spoken openly in the past about their desire to start a family.
A year ago he made a whirlwind visit to cast his eye over the Invictus Games preparations, where he charmed his fans during torrential rain at Circular Quay.
The Duke and Duchess of Sussex would also attend the inauguration and closing ceremonies of the Invictus Games, which would be held from October 20 to 28.
Harry and Meghan will rest and recuperate on Monday before beginning of their official duties on Tuesday.
Which is interesting as Meghan and Harry's announcement has come as the couple set off on their first royal tour to Sydney.
Prince Harry and Meghan are now in Australia and will fly to New Zealand at the end of this month.
He launched the Paralympic-style competition for injured servicemen and servicewomen and veterans in 2014.
Hundreds of people gathered to catch a glimpse of the couple and cheered as their auto was driven into the property a short distance from the iconic Sydney Harbour Bridge.
"I want to. commend Prince Harry for his tremendous initiative in lifting the spirits of every single service man and woman all around the globe", Morrison said.
Meghan has immersed herself in the royal way of life, ending her career as an actress, and becoming a full-time royal.
During their first joint interview in November past year, Harry said he and Meghan were keen to "start a family in the near future". Ms Markle, 37, starred in the American legal drama Suits.
He told ITV's Good Morning Britain in an interview a month after the wedding: "She's wanted children for a long time and when she met Harry and she spoke about how much she loves him, there's got to be a child in the making, somewhere soon".