Lets get a list going of hiring speculation for 2012. Cut and paste if you have updates/changes:
United/Continental (Recalling currently, hiring 2012?)
Delta (120 flowthroughs in 1Q2012?)
American (Recalling currently, hiring spring/mid 2012?)
USAir (Done hiring until 2013)
Alaska (App window opens soon, classes start Dec, 382 pilots over next 3 yrs)
Hawaiian (?)
Southwest (?)
Jetblue (250-300 newhires/year for the forseeable future)
Spirit (Hiring)
Allegiant (?)
Virgin America (?)
Frontier (?)
FedEx (Hiring 2012, numbers?)
UPS (?)