The 875 Australia maps being released are as follows:
875.3613 = full featured map with IQ routes, ALG, TTS, ASR.
This is the preferred map to use with any navcore version 8.2xx or higher.
875.3615 = basic map with no features (except TTS and ASR on some devices).
This is the map to use for navcore versions less than 8.2xx (but higher than 7.xxx) and for all PDA/WinCE devices and Chinese units.
875.3671 = IQ routes and ALG only - no TTS & ASR.
This map is mainly used for Carminat devices (built-in car navigation).