I have a 2010 Fusion Hybrid with Nav and a 2013 Fusion Hybrid with Nav.
The upgrade to the software for the 2013 works well and I am enjoying the new features in the info center.
Now, how about an upgrade for the older vehicles? The most annoying thing about the 2010 is that the rear camera does not come on until I am out of the parking space or garage and halfway down the road. The 2013 is much faster to display the back up view.
I'm sure some of the features from the late model upgrade could also be integrated into a "Fix" for the rear camera problem.