Managers argue it is a chance to create the best news channel in the world.
She told journalists that her mother is impressed by studio presentation, but her children are less so.
Recruitment is underway for the roles.
Yalda Hakim quit as a BBC News chief presenter to join Sky News.BBC News
Martine Croxall, Ben Brown, and Annita McVeigh were among those who were not successful.
They will earn as much as 230,000 ($276,000).
Pilots are underway, with a dry run of the new schedule taking place on March 6.
Christian Fraser
No-one should get hung up on April or expect to see everything change at once.
It will be anchored from London during UK daytime and evening, and from Washington D.C. and Singapore overnight.
There remains a great deal of anger about the treatment of presenters with decades of experience.
People are furious about it, said one insider.
Producers think the presenters have been treated brutally.
