Southwest's schedule is now open through August 3, as predicted in the new Official Schedule Extension Prediction Thread:
http://flyertalk.com/forum/showthread.php?t=527240
Other news: capacity controls on new award tickets are much tighter than I expected to see. This represents perhaps the most significant devaluation of the Rapid Rewards program in its history. Check out the discussion in the Southwest forum if you have not already done so.