Finally got around to reading the IIP and the NDS. Was interesting to note that whilst the IIP just states that the c27 will be replaced, the NDS specifically says it will be replaced by a "commercial aircraft fleet to support personnel and logistics transport across the Pacific." Sounds very much like this aircraft doesn't have a frontline / wartime role of any descriptionNot surprised, when they were purchased the USAF was planning on operating them, but cancelled their order not long after they entered service with the RAAF.
IIP does say they will be replaced, but not what with.