I also was told ( and have seen a couple articles talking about how Ford made the nav option able to be added after the sale. with purchasing the $795 SD card.
I have a brand new unopened myford touch Nav SD card that came with my 2011 edge limited that I am not gonna use ( Just bought a top of the line Garmin a month before the new edge). the nav option came in the 302a package so if anyone is interested in it for WAY below the $795 ford price let me know.