Originally Posted by BeatNavy

JetBlue doesn't keep a rolling application window open like many other airlines. They want people who want to be there, so they only open it up for a short amount of time (week or two) about twice a year. When they reach the threshold of the number of apps they feel like reviewing, they close it. People who want to be there keep an eye out for the window to open (here, friends, and an email if you previously applied are the ways I've found out about the windows opening). Once you apply, you can't update your application, but you can continue to update your profile (hours). That is what people are referring to when they say update often. And apply to each window that opens since they purge all the old apps, but that goes without saying.