I just e-mailed Brett at Coastal, and he says this:
"Great News! The Sync 2011 Edge factory Ford radio with the internal hard drive and "Jukebox" mode is completely compatible with the Coastal Electronics Sync LockPick. This LockPick offers features such as NAV in motion, video in motion, and camera on demand (if equipped) which allows full camera viewing in any gear!"
It seems like they say it will work, and I'm thinking about ordering it, but I'm still talking to him to make sure this is fully compatible with the 2011 Edge Limited.