Samsung Knox approved by US Department of Defense

To be clear, this does not mean that Samsung and the DoD have a deal in place, or that the DoD has placed any orders for Samsung devices. But, Samsung has announced that the Galaxy S4, Galaxy S4 Active, Galaxy Note 3, the Galaxy Note Pro 12.2, and the Galaxy Note 10.1 2014 Edition have all been approved for the U.S government's Defense Information System Agency (DISA) products list. All of the approved devices are running Android 4.4 with Samsung's Knox software included. 

If the government does move forward with Samsung on a deal, this would mean that the approved devices could be used by the DoD or other federal agencies on unclassified networks. No doubt, Samsung is pushing hard for that deal right now, but there has been no announcement on that front yet. 

source: Android Central