"We've been working with an initial squad of 60 players we identified, which has been reduced to 39 for this camp," Cheika said.
"We'll trim that number down to 30 for each Test, so competition for spots is everything.
"Our first week in camp will target a high-intensity training attitude, building on combinations within that environment.
"We want to build on the identity we've worked hard on establishing over the past 18 months."
Backs - Israel Folau (NSW Waratahs), Bernard Foley (Waratahs), Nick Frisby (Queensland Reds), Mike Harris (Rebels), Dane Haylett-Petty (Force), Rob Horne (Waratahs), Karmichael Hunt (Reds), Samu Kerevi (Reds), Tevita Kuridrani (Brumbies), Christian Lealiifano (Brumbies), Luke Morahan (Force), Eto Nabuli (Reds), Taqele Naiyaravoro (Waratahs), Nick Phipps (Waratahs), Joe Powell (Brumbies)
Forwards - Allan Alaalatoa (Brumbies), Rory Arnold (Brumbies), Sam Carter (Brumbies), Adam Coleman (Western Force), Scott Fardy (Brumbies), Liam Gill (Reds), James Hanson (Melbourne Rebels), Greg Holmes (Reds), Michael Hooper (Waratahs), James Horwill (Harlequins), Leroy Houston (Reds), Sekope Kepu (Bordeaux), Ben McCalman (Force), Sean McMahon (Rebels), Stephen Moore (Brumbies, capt), Dean Mumm (Waratahs), Wycliff Palu (Waratahs), David Pocock (Brumbies), Tatafu Polota-Nau (Waratahs), Rob Simmons (Reds), Scott Sio (Brumbies), Will Skelton (Waratahs), James Slipper (Reds), Toby Smith (Rebels).