Good question Rod
With the current economy and defence cuts, can't see this happening for a good while, although notice that they've started dishing out serials to those god-forsaken UAV's and target drones as part of what appear to be normal serial batches, so that certainly won't help
Also interesting seeing the Army Air Corps Islander/defender thingy at Waddo the other week sporting from memory "004" as the three numeric serials, as similar with the new Hawks, so that will give them a few more options
Rgds
Rich