UPDATE: 4:34 p.m. Politico.com is reporting that Fred will announce via a webcast. Yeah Baby! This is a bloggers dream.
UPDATE 4:23 p.m.: WATE in Knoxville, TN got the Knoxville scoop.
UPDATE 4:15 p.m.: Fox News is reporting a September 6, 2007 announcement, one week from today.
UPDATE 3:55 p.m.: LA Times is reporting a 4:00 p.m. conference call announcement.
Original Post 3:48 p.m. Unconfirmed sources say that may be likley.