i dont think the gameplay will be like that.
I think indeed it will be more freedom based in movement. Here it just seems like normal metal gear solid 4 character with a new type of gun that swings. Rather than really building a type of swordplay in the game.
I hope it will like a mix of assasinscreed and say a game like oni. (oni is still the best 3rd person fighting game where you control movement in a real world in my opinion).