In aninterview with Official Playstation Magazine, Head of Konami Hideo Kojima revealed some interesting new information for Metal Gear Solid 4.
Kojima revealed that players will have the option to be aligned with either nation or A or B and have the ability to side with neither and make enemies of both.
For example, depending on your allegiance, you can stroll right past the cyborg Gekkos if you are of a friendly nation -- or be mercilessly attacked if you are spotted as an enemy.
On the battlefield, a player has the freedom to shoot any soldier in the field, much like a first person shooter. He also mentioned that, while in previous Metal Gear Solids you had to hide yourself and the bodies of enemies you have killed, this is no longer necessary, as he has the revolutionary 'OctoCam' camouflage system.
Kojima emphasized that in one of the newer trailers, Snake appears much younger in parts. He reiterates that this scene was put in the trailer to create a stir amongst the community.
He later discusses that the motion sensitivity function of the Sixaxis controller will play a significant roll in the game. Though he does express disappointment at not having rumble, "the controls in MGS3 got a little complex, so you'll have a little more direct control in MGS4. That said, I miss the rumble and even now I hope it will come back."
The story is set in the Middle East, South America, and Eastern Japan and should be released in late 2007.
Source: OPM