I doubt, very much, that the final game will even resemble the lighting/shodowing model used in this trailer. As far as geometry assets go, sure it is possible. Even texture quality might be close. But lighting? I seriosuly doubt it. On another note, it seems the biggest downgrade from all of last year's Sony E3 titles is lighting. Other game assets are close. Don't hold your breath for Killzone to have the amazing lighting and self-shadowing that it had in the E3 2k5 demo, though I suppose pigs fly.
