Uncapped prop Toby Smith is a newcomer while Wycliff Palu and Matt Giteau return in the 31-man Wallabies squad chosen to prepare for next week's Rugby Championship decider against the All Blacks.
Smith, 26, was called in by coach Michael Cheika following a consistent Super Rugby campaign for the Melbourne Rebels.
"Toby has had a solid season with the Rebels, and has been working really hard while the group has been away," Cheika said.
Powerhouse No 8 Palu was rested from the opening two test wins against South Africa and Argentina to overcome injury niggles but returns for the clash with the All Blacks at Sydney ANZ Stadium next Saturday.
"Our intention was always to rest Wycliff prior to this camp, and he has come back in great shape and really eager to play," said Cheika.