If this is featured in all 1/3's from september this must be a drop in replacement as the 1's are not getting any lifting as fare as I known. Further a wire and module(DAB,Amplifier,CD Box etc) changen normally only comes with new Models.
So if wee are lucky it should be possible to upgrade old versions to the new one (4000$
) just like going from MKIII - MKIV.
This looks like it is going to be running on Windows Ce again (WMA conversion and the MAP software looks a lot like Navigon on windows CE).