Fox News is not getting the seat vacated by Helen Thomas, but they are moving up to the front row. The decision was unanimous. The Associated press is moving into the vacated seat, and Fox News will be taking the seat where the Associated Press was (see old seating chart for reference).
"The White House Correspondents Association is moving Fox News up to the front row in the briefing room, according to sources familiar with the process. The WHCA board's decision was unanimous. ...
Since veteran journalist Helen Thomas retired, three news organizations—Fox News, Bloomberg News, and NPR—have argued that they should move to the front row. Fox News will join the broadcast networks and CNN up front.
However, Fox News will not be taking Thomas's long-held seat in the center.
The Associated Press moves to the center under the new set-up, with Fox News taking the wire service's spot in the front row."