Hi all, another Aussie customer here, only just found this place. Can't believe I hadn't found it earlier!!
Just got off the phone with CS, my status is "backordered" too, the lady on the phone said not to worry, everything will be fine, though I imagine she's just trying to display a rosy facade so there's not a worldwide riot. I asked explicitly if my order was far enough up the list to guarantee me a set (I ordered shortly after midnight Europe time) and all she said was "not 100% sure, but it's more than likely". I suspect she's alluding to the fact that TLG are going through the orders and filling them randomly as has been suggested in earlier posts. Doesn't fill me with the greatest confidence to be honest, will just have to play the waiting game.
Funnily enough, orders are still able to be placed online, even though it must surely be oversold by now. Perhaps the best tactic would be to order as many of them as possible to maximise the chances of winning this lottery and getting one that ships, then cancelling all "in process" and "backordered" ones. Someone at TLG seriously dropped the ball on this one.