Read http://www.vg247.com/2010/08/19/gamescom-keza-finds-significant-changes-in-fallout-new-vegas/ He kind of describes the same type of situation.
How come he says everything above the surface is the same especially the "greys and washed out browns of the world"? How come the other previews have made it a point to say that the world isn't as dark and gloomy but this previewer says otherwise? Contradicting previews ftl?
Edit: he also said the wooden animations and odd plastic faces are back but I thought some of this has been at least somewhat updated?