Fox News Unveils New Prime-Time Lineup

The Fox News Channel on Tuesday announced a new lineup of hosts for its weeknight schedule, moving Greta Van Susteren to 7 p.m. from her current spot at 10 and moving Sean Hannity into the 10 p.m. hour from his present 9 o’clock slot.

The 9 p.m. show is going, as previously reported, to Megyn Kelly, who is considered the fastest-rising new star at Fox News and is a centerpiece of the network’s plan to attract younger viewers. Bill O’Reilly will remain in the 8 p.m. slot with “The O’Reilly Factor.”

The changes have been long in the planning and have attracted much speculation, especially about whether Mr. Hannity would slide to 7 p.m.

Roger Ailes, the network’s founder and chairman, opened up the 7 p.m. hour by elevating his most prominent news anchor, Shepard Smith, to a new role that will bring him on throughout the evening with breaking news.

In his announcement of the changes on Tuesday, Mr. Ailes said the success of Fox News had extended well beyond the traditional hours considered prime time, 8 to 11 p.m. He called that definition of prime time an “antiquated format.”

Ms. Kelly’s new show will be called “The Kelly File” and will be live, with a concentration on breaking news. The new lineup will begin Oct. 7.