Young Auckland centre Rieko Ioane looked impressive in his first training session with the All Blacks, says assistant coach Ian Foster.
Ioane has entered the fold after a spate of injuries before, and during the side's 42-8 win over Australia on Saturday.
Five players have got the call-up - Rieko Ioane, Damian McKenzie, Seta Tamanivalu, Liam Coltman and James Parsons.
After their first training session, Foster said Ioane, who is 19, settled in well, but good things take time.
"He looked like he was really keen and excited and trained well, there are a few new faces today but it takes a lot of hard work from them to get up to speed," he said.
"Their peers who play in the same position do a lot of work with those guys to get up to speed, and the expectation is that they get up to speed pretty quick."
The versatile back Ben Smith said the newest recruits were bringing a strong dose of youthful enthusiasm to training.
"There are a lot of new faces which is quite good and brings some good energy to the group," he said.
"Over today and yesterday we've been teaching these guys about their roles and helping where we can."
The All Blacks will retain the Bledisloe Cup if they beat the Wallabies in Wellington on Saturday night.
Australia's coach Michael Cheika said trying to turn around the team's fortunes against the All Blacks is probably the biggest challenge of his career
"The criticism from the performance is very warranted no doubt about that and when there's a lot of that talk in your head you start to get weighed down by it," he said.
"[The players] are feeling pretty terrible about it, so we've got to get them back up into a situation where that's driving them to do something better this weekend.
"I know a lot of people are going to think that the same result is going to happen and we understand that, so it's up to us to prove otherwise."
He said it is his job to ensure his players don't get dragged down by criticism and instead use it as motivation.
The All Blacks' loose forward, Jerome Kaino, said he was expecting a far more intense Wallabies performance.
"We just put ourselves in their shoes and what we'd be doing and the intensity of our training," he said.
"Without a doubt, I think the intensity of their game will definitely step up at the weekend and if it was us, we'd be doing everything possible to play a lot better and get a win."