Australia have called hooker Tatafu Polota-Nau into their squad while Isi Naisarani and Rob Valentini will be development players on tour.
Naisarani was training as an unofficial member of the squad in Japan and has done enough, alongside Valentini, to impress Michael Cheika.
Veteran Wallaby Polota-Nau meanwhile comes back into the squad after a brief stint with club outfit Leicester Tigers, with hooker Brandon Paenga-Amosa and versatile forward Jed Holloway both now returning to Australia after training and playing with the squad in recent weeks.
Lock Adam Coleman is expected to be fit for the Wallabies’ first Test in the UK after missing the third Bledisloe Test with a groin injury.
The Wallabies kick off their end-of-year Tests with a match against Wales at the Principality Stadium in Cardiff on Saturday, November 11.
Wallabies updated squad
Forwards: Jermaine Ainsley, Allan Alaalatoa, Rory Arnold, Adam Coleman, Jack Dempsey, Folau Fainga’a, Ned Hanigan, Michael Hooper (c), Sekope Kepu, Tolu Latu, Tatafu Polota-Nau, David Pocock, Izack Rodda, Rob Simmons, Pete Samu, Scott Sio, Taniela Tupou
Backs: Adam Ashley-Cooper, Tom Banks, Kurtley Beale, Israel Folau, Bernard Foley, Will Genia, Jake Gordon, Dane Haylett-Petty, Samu Kerevi, Marika Koroibete, Jack Maddocks, Sefa Naivalu, Jordan Petaia, Nick Phipps, Matt Toomua
Development Players: Rob Valetini, Isi Naisarani