The Blacklist is a countdown of escalating terrorist attacks against America. The President has asked Sam Fisher to be the weapon aimed at America's enemies once again, bestowing upon him the Fifth Freedom, the ability to defend the country no matter the cost, or the methods employed. The following trailer sheds some more light on http://www.trueachievements.com/TCs-Splinter-Cell-Black....htm
You can view some of the actual gameplay here
. Splinter Cell: Blacklist
will sneak behind your back sometime in Spring 2013.