Diane Sawyer stepping down from ABC's 'World News'

Photo: Ida Mae Astute, ABC)

Ann Oldenburg, USA TODAY
           
Get ready to say goodbye to Diane Sawyer at ABC's World News desk.
And hello to David Muir.
ABC News today announced new roles for Sawyer, 68; Muir, 40; and George Stephanopoulos, 53.

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World News with Diane Sawyer
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