According to an unnamed, retailer source brought to you by IGN, Rock Band may never see the light of day in Australia. It's not the content either: Reportedly, retailers down under aren't interested in stocking a big, bulky videogame with fake instruments when Guitar Hero World Tour is coming out in a few months to take up their shelf space.
Rock Band 2 appearing there is in doubt as well for the same reasons. If so: Major victory for Activision's Guitar Hero franchise. We'll let you know when/if we hear anything else.