I think you are talking about Basecamp, it does support 3D.
Garmin Topo Au & NZ V3 is the only map of Australia I know of that has DEM Data present & displays in 3D.
Of course there are Topo maps for other countries that display in 3D.
MapSource was discontinued in October 2010, last version is 6.16.3 & does not have 3D support. It is superseded by BaseCamp which is now up to version 3.2.2.
Garmin Topo Au NZ V3 can be found here
Hope that clears things up for you.
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