Charles Gibson will sign off from World News Dec. 18.
Diane Sawyer will officially move into the anchor chair in January, though ABC News has not made an announcement about her start date. But according to sources at ABC News, Sawyer plans to give herself a soft launch at World News by anchoring the broadcast on Dec. 21 and 22 before leaving for the holidays.
An announcement about who will succeed Sawyer at Good Morning America is expected in the coming weeks.
Gibson has anchored World News since May 2006. Prior to that, he co-anchored GMA with Sawyer.
Gibson came to ABC News in 1975 from Television News Inc. (TVN), a syndicated news service. From 1970 to 1973 he was an anchor and reporter for WJLA-TV (then WMAL-TV), the ABC affiliate in Washington, DC. Prior to joining WJLA-TV, he had been news director for WLVA-TV and Radio in Lynchburg, Virginia. His first job in broadcasting was Washington producer for RKO Network in 1966.