Attack on Titan is the closest thing we have to a new 'big' anime -- like a new Naruto or Bleach or Dragon Ball. As such its manga turned anime is about get the live-action cinematic treatment. Surprise: the movie doesn't look terrible, and it's set to get a cinematic release in Australia.
The super vague release date, at this point, is 2015 but distributor Madman has promised more details will be available soon.
The truth is that Attack on Titan doesn't even have a firm release date in Japan. At the moment it's 'Summer 2015', which means 'Winter 2015'in our hemisphere. Attack on Titan is extremely popular in the West, however, so I would hope for a relatively quick turnaround.
For now, might as well check out the brand new trailer for the movie. I'm actually intrigued. Looks way, way better than I expected.