The memorial is set for Sept. 9 at New York's Lincoln Center. A CBS executive _ who spoke on condition of anonymity because the plans aren't finalized _ says the public will be invited to attend, with ticket arrangements to be announced later.
The anchorman once known as "the most trusted man in America" died at age 92 last month. His funeral was held July 23 in New York City.
The speakers list isn't complete, but the executive says Bill Clinton, Katie Couric, Andy Rooney, Buzz Aldrin, Bob Schieffer and Tom Brokaw are expected.
Mickey Hart, Wynton Marsalis, Michael Feinstein, Jimmy Buffett and the U.S. Marine Corps band are anticipated performers.