Stephen Segaller, the vice president of programming at WNET in New York, where the program originates, called the new anchor rotation an "interim arrangement".
A new anchor represents a fresh start for the broadcast.
No new anchor for "48 Hours" has been named.
The network is expected to name Scott Pelley the new anchor next week.
Fox New anchor Megyn Kelly will executive produce the project in her first scripted TV debut.
George Schramm, 55, a former demolition worker and crew member, hauled up a brand new anchor.
He said of NBC's new anchor, Brian Williams, "He's a great journalist, a great reporter.
Instead, CBS's new anchor spoke to the network's Congressional correspondent, Nancy Cordes, at no extra charge.
For example, a new anchor tenant in a large office building would count as a change.
In this transient environment, people who have lost everything yearn for a new anchor.
"It's like Christmas morning when you're a kid," says ITV's new anchor Adrian Chiles.
