"Publishers Weekly" (sic) puts out a long list of their best 100 Books of the Year about this time. I couldn't find any Australian books on the general list but on the Children's list we have:
Fiction
Tales from Outer Suburbia
Shaun Tan (Scholastic/Levine)
Tan proves that his prose is every bit as hypnotic as his artwork in this wondrous collection that reveals the banality and strangeness of the suburbs.