We are very proud to announce that the English (Australia) language is now available in the Waze app. The localisation team, made up of LysdexiaEht, Vestigal and myself have been working for months to perfect the language to make the Waze app feel Australian got our users.
To change your language, go to Settings > General > Language and select English (Australia). This hasn’t been announced outside this community, and you’ll be some of the first to use it. 
Next on the agenda is launching an Australian voice pack. Stay tuned!