Not that I know of. Toyota generally upgrades their navigation system every 3-4 years. Gen 6 - 2010 - ? Gen 5 - 2006-2009/2010 Gen 4 - 2003-2005/2006 Gen 3 - 2000-2002
I've upgraded and found added detail in my area with new bridges and cloverleaf updates in place. Found better street numbering and road renaming too. Haven't seen anything written yet that summarizes all changes, but do agree with html spinner that the hands free blue-tooth phone connections have become noticably faster than the previous two releases.
There's a PDF somewhere that has all the updates for the latest disc. Most of them are in Metro Vancouver lol. The ones outside of the Lower Mainland are mostly updated highways. Edit: Here's the thread with the PDF. http://priuschat.com/forums/gen-ii-...-nav-dvd-my-2006-gen-5-nav-2.html#post1187480
Roland1555 did you see any differance in the audio system? any new controls for sound for better adjustability? or is it just the maps and a BT bug update?