I believe the H Herc's are now down to 7 frames and the last one has come out of DLM. Happy to be corrected, the guys at the coalface don't get told anything by ALG. ACAUST apparently told guys at SAW about H extension to 2016 and there's rumours abound that QDS and Marshall have been asked to quote on this. If they don't keep the maintenance schedule though for DLM's it will probably be a moot point and Jul 2013 retirement will look pretty solid at which point the J's will fatigue out even quicker.
5th C17 should help their fleet out with maintenance and availability.
There was also an accident/incident? in 2008. C130H doing tacex had a nose gear scissor join snap after T+G on dirt strip in west NSW. Crew did fantastically (and were recognised for this) to get it on the ground without crashing.