Wallabies coach Robbie Deans insists next week's four-day training camp will serve as a genuine audition for spots on the upcoming end-of-season tour.
Deans will put an extended 43-man squad including 10 uncapped players through its paces in Sydney next week before naming his final 35-man touring party.
The Wallabies kick off their gruelling six week tour against the All Blacks in Tokyo on October 31 before facing England, Ireland, Scotland and Wales in their first grand-slam tour in 25 years.
The Wallabies have also agreed to play a midweek match against English club side Gloucester.
The match will be staged three days after the game in Tokyo and four days before the Wallabies open their UK tour.
It will also be the first time an Australian national team has played at Kingsholm – home ground of Gloucester Rugby – since the inaugural Wallabies beat county side Gloucestershire 16-3 during their famous 1908-09 tour.
"We've gathered 43 players to settle on 35. If we had of settled on 35 we would have simply (selected) 35 and got on with preparations," Deans said on Monday.
"Obviously the fact is that all of these 43 that we've named are there because we are considering what they offer us, so it is really important what they bring to that camp in every way."
"There'll be elements of providing them with a background to what we're about because the reality is that any one of these blokes could get a call if they're not successful in the first instance, they could very well get a call at a later date so we want them ready to go."
"But also most importantly they'll want to be on the first flight, and there will be elements of not only education if you like, in terms of background but also competition."
Deans confirmed the four-day super camp will include a behind-closed doors trial after a proposed possibles v probables fixture to be held at the SFS was scuppered by the Rugby Union Players Association after players demanded match payments.
Pressed for details on the match, a coy Deans, who was privately seething when told his players had requested $2500 per man to take part in the original trial, replied: "It'll be overseen by a referee, it's essentially the same thing but we just won't be keeping score for the public, but we will be keeping score privately."