I have downloaded and burned the V14 Toyota one that was doing the rounds on Bitorrent (for research and testing purposes only

). You need a dual layer DVD drive and disk to burn the image, but it works in my car fine (MY07 GTspecB).
Graphics appear to be the same.. I live in Sydney and travel a bit interstate and have notice differences in the maps from v13 like the Albury bi-pass is now there.
Can't get the school zone/speed camera's warnings to work but that must need a update to the base system software. The data is on the DVD, would love to get this to work though any ideas anybody ???
Maybe some improvements in directions given, etc, but not that noticeable I personally think the system is quite good anyway.
Little note: If you need to disconnect your battery for some reason you can't reload from the burned DVD, you just go back to your original DVD boot off there then pop out that DVD and insert the newer version. You can check what version you are running from one of the setup screens.
V15 is due out this month, hopefully not at the current ridiculous pricing...
Hope this helps.