I have not kept up with the timelines for those that were interviewed after March and early April 2004, but what I can tell you is the following from group of friends who interviewed for the FO spots:
February 2004, 2nd interview = May or June course start date
March 2004, 2nd interview = June or July course start date
April 2004, 2nd interview = call to advise successful, but no course date yet.
Good luck