On 17 October 2018, the series was renewed for an eighth season and it was announced that Goodrem, George, and Rowland would all return, along with host Sonia Kruger.
[2] On 14 November 2018, Nine announced Guy Sebastian would replace Jonas as the fourth judge for the eighth season.
[4] With the eliminations of Jack Vidgen, Chynna Taylor, and Mitch Paulsen, Guy Sebastian had no more contestants left on his team, making this the fourth season in the Australian version of the franchise where a coach did not have a contestant in the Grand Finale.
Additionally, this is also the second season where Delta Goodrem managed to bring two artists to the Grand Finale.
With Diana Rouvas's win, this marks the first time in the Australian history that an artist from a past season won the competition.