See here. One misunderstanding in this report is in the following paragraph:
Though somewhat suspect, the report adds that the touch-screen handset will arrive unlocked for use on many of the nation's wireless carriers and that Australian Apple resellers, unlike those in the US and Europe, will be privy to market the device to their customers.
Actually, not too suspect, given that some Australian law professors determined that Apple tying the iPhone to one carrier could be a breach of the Trade Practices Act. At the time I was concerned that Australia would not see the iPhone for some time. Apparently not true given the 3G version of the iPhone is scheduled for worldwide launch as the iPhone's purported launch in Australia. Yay for consumers! And yay for me!