By "dpkg -x"'ing the .deb, you can find out some interesting things, like the first test build has already been made on the April 2nd 2008, then nothing until August 29th and September 2nd (the current version, 0.3).

Apart from the changelog, there's just translations, the icon, the osso rtcom profile and the binary libnokiachat-plugin.so file there, plus the glade files for the different dialogs - I think that's the same for all osso accounts plugins.

There is nothing in this package that links or calls any GPS libraries, so I guess it's just another Jabber client package with branding. Also, no display of your buddies' GPS location as far as I can see...

By the way: There is already a Jabber "standard" for GPS location publishing: http://xmpp.org/extensions/xep-0080.html - I think it won't be too difficult to implement that - with the added feature of not being dependent of "Nokia Chat" but being able to use it with other Jabber/XMPP clients, too.