Slimebeast on 08 June 2008
There's hardly any difference between the 2006 and the 2008 version other than different tone of the color palette.
Nearly all the textures and environment models are exactly the same. Just a few 3D models have been replaced or re-worked a little bit, such as the helicopter.
So with MGS4 it's the same thing as in nearly all games we see early footage from - in the end it will be almost exactly the same.
