No state dinner in Australia it seems; on November 2nd they will receive a state lunch from the Australian government. I do not know the reason why, let's hope it is practicalities and not a lack of courtesy. It is highly unusual, even China hosted a dinner for the king.
Probably due to practicalities, but I don't know. Isn't a state banquet the normal thing also in Australia, at least I remember that the Swedish Royal Couple were given a black tie (with tiaras) state dinner in 2005.