William and Kate are planning to bring their son Prince George, who will be nine months old, but will make a final decision closer to the time.
The royal couple will also visit New Zealand but an itinerary won’t be released until the New Year.
If George does accompany his parents, it will echo William’s own first overseas tour. Charles and Diana took him to Australia when he was the same age in 1983.
William has visited Australia several times, the most recent being shortly before his wedding in 2011. This will be Kate’s first official visit.