IMHO The GRAW seems to be FFW=Future Force Warrior. More or less a future version of the Landwarrior. I might be wrong but that is what I have come to think..
but then again I am just a medic and from sweden and we have not come that far yet as the Americans..
EDTIT... this is from defence-update.com
Future Force Warrior (previously known as Objective Force Warrior) is now scheduled to be the third capability upgrade phase of the Land warrior System (also known as Land Warrior Block III). Future Force Warrior (FFW) is designed as an integrated "system of systems", as part of the army transformation to a soldier-centric force which will.