In the past, the Duke and Duchess of Cambridge don't engage in public displays of affection especially when they are at formal engagements.
When the couple last came to Australia they had a packed 10-day itinerary, starting a reception at the Opera House and a visit to bushfire-affected areas in the Blue Mountains.
Instead, Charles and Camilla explored a nearby market in Leicester and spent some time with a local women's charity, while Kate and Prince William departed elsewhere.
It will be the couple's first trip to Australia since 2014 and Prince William's fifth visit Down Under.
"Our thoughts and prayers are with all the people and communities who are affected by this devastating event".
Senior royal editor for PEOPLE Michelle Tauber recently revealed that while things were frosty between the royal foursome following the Duke and Duchess of Sussex's decision to step down as senior royals, things are now improving.
"We continue to be shocked and deeply saddened to hear of the forest fires that are destroying homes, livelihoods and wildlife across much of Australia", the couple said in a statement in January.
"Even if it gives one person a positive moment it's good".
Kate, Duchess of Cambridge, 38, and Prince William, 37, have been rushed off their feet in the wake of Meghan Markle and Prince Harry's withdrawal from the fold. No dates or locations had been settled as yet. "William and Kate do seem to be bringing more non-verbal signals and touches into their "routine" post-Megxit though, apparently understanding that they can push the boundaries a little without suffering from obsessive interest and criticism", she said.
The prime minister is expected to propose a program in his official letter to the palace.