The most noticeable changes to the app is it's reduced size from several Gigs to just 45Mb!
Navigon has now given the user the option to only download the maps they need and can swap and change when needed. However this is now done by downloading the critical files and maps directly to the iOS device. I would suggest not updating the app unless you have a Power supply and about 20Min to spare.
(149.7Mb for UK map & 197.1Mb critical files)
All things considered it is looking good and I for one will be giving it a go on my way home tonight!
HERE LIES PND May it rest in peace.
Navigon 7310/iPhone Navigon&Copilot