The streamlining bit for either area or aerodrome control is true - all trainees on the same course initially then split according to whether you are chosen to train for area or aerodrome - overall idea to reduce the training time and costs???
Postponement is definitely happening too. The July 2002 course has its number reduced 20 or 24 (can't remember exactly) students. I'm booked on the October 2002 course when I've been told the numbers are back up to 30.