Looks like the US have a release date for The Rover DVD. Not 100% sure if this is gospel, but it’s something to look forward to. According to Walmart you can preorder Blu-ray + Digital HD and DVD + Digital HD by clicking on the links.
Thanks @FeistyAngel for the Walmart tip.
Aussies can be notified of availability by signing up for notification at EzyDVD here
And Amazon.ca have the DVD available for pre-order here.