AS 1530.8.1 is the test standard for materials and elements of construction for use in bushfire prone areas of BAL-12.5 up to BAL-40 whereas AS 1530.8.2 is the test standard for materials and elements of construction for use in bushfire prone areas at BAL-FZ.
These revisions include a general review to improve clarity, intent and specification of all testing requirements as well as a number of other changes such as the inclusion of roof valley details for roof construction, a test procedure for windows with screens and shutters and a number of other improvements to clarify existing requirements or address gaps in the current standards.
Visit the SAI Global website here and here to download a copy of the draft revisions of AS 1530.8.1 and AS 1530.8.2, respectively. Please note you will need to create a free login to be able to download these public comment drafts.