Mozilla’s new Australis interface is moving along in the Firefox development process and is on track for widespread release in either Firefox 29 or 30. Aurora is what Mozilla calls the pre-beta version of future Firefox releases. The Aurora version of Firefox 29 will turn to beta in mid-march and then become a final release on April 29. Firefox 30 is scheduled for a final release on June 10. Australis could end up in either one of those.