A court decided Apple had a weak case and was unlikely to succeed in a full trial and so the injunction will be removed shortly unless Apple can get a higher court to play their game.
see The Register – Samsung gets a win in Oz patent battle
I expect more such decisions as Apple’s case is very weak IMHO. Judges who have issued the injunctions have only glanced at the devices rather than examined closely the details. Further the ITC in the USA is looking at the issue of importation of devices violating patents and other matters. Apple is gambling with their reputation and is about to lose in a big way. In a mud-slinging contest, some will stick.