Tame, who is based in New York as the One News US correspondent, will move home for the new role but will return to America ahead of the US election in November. It's not known whether a fill-in co-host will be brought in to join Barry then.
Dr Misha Kavka, associate dean of Film and Media Studies at Auckland University, said even though Barry and Tame are established figures, audiences need time to adjust.
"We stick with something we are comfortable with so to bring different presenters in to Breakfast then have them go away again for a bit and come back could be confusing."
It has been a turbulent past two months at TVNZ's early morning news show. In July, the Herald revealed veteran broadcaster Peter Williams is the latest presenter to be dumped from Breakfast.
It is believed Williams, who has worked at TVNZ since 1979, will continue to read the news at weekends. The Weekend Herald revealed two weeks earlier that Rawdon Christie and Nadine Chalmers-Ross had been told their time hosting the flagship morning news programme was up.
A TVNZ spokeswoman said the broadcaster would not comment.