Of course there are restrictions with these low prices including the following from the press release:
Fares are available only on www.southwest.com
Fares can be purchased July 19, 2011 through Aug. 1, 2011, 11:59 pm PDT
Travel must take place between Aug. 23, 2011, and Dec. 14, 2011
Travel valid every day except Fridays and Sundays
Blackout dates apply: Sept. 1 through Sept. 5, 2011, and Nov. 17 through Nov. 29, 2011
Other discounted fares from Raleigh include $94 one-way to Orlando and $79 to Ft. Lauderdale one-way. Thanks to Triangle Business Journal for the heads up on this deal!