Rule Changes:

http://profootballtalk.nbcsports.com...by-nfl-owners/

The rule will allow the injury spotter upstairs to communicate directly with the on-field officials, to stop the clock if a player appears to be shaken up to the point a further check is warranted.
There will be no hanky panky or hickey with this one at all.

Details: http://profootballtalk.nbcsports.com...ificant-power/