OLD MAN RUFUS is a new Killeroo comic book, taking place some 30 years in the future of the regular series. It's a one-shot for now, but may be expanded to several issues if well received.
However, the Australia of the future is a very different place, after several nuclear strikes on the Eastern coast have made much of the country a barren wasteland. The only remaining city is Perth, with all of Western Australia walled off by an enormous barrier to maintain the Cyberpunk-like society that has developed there.
For a world that Killeroo once had to hide away from society, THIS Australia is now largely his domain.