From the horse's mouth:
They still have a lot of applications to sift through (over 3000).
I got the impression that:
A) they haven't finished doing telephone interviews
B) more people will be called for selection (not sure if that's experience/non TR, ex mil, inexperienced etc)
C) having experience on a type over 10 tonnes will count in your favour.
I know for certain that *most* people at recent selection days have had experience on stuff over around 7 tonnes.