I would imagine it's because that cut of the film doesn't exist in anything approaching a final form, much less something that would ever be usable for a high-def transfer. I'm assuming you're referring to the extra gore that was in an early rough cut of the film (I think I have a vhs copy of...
Here's the DP's reaction to the controversy over this blu-ray. It's worth noting for all future discussions of 'Approved' or 'Consulted' transfers:
Source: http://www.cinemalowdown.com/2012/11/cinema-lowdown-exclusive.html
After watching the whole blu-ray, I have to say, the blue tint looks terrible. This is a revisionist transfer, and no matter who did it or supervised it, I think they made the wrong decision. It goes beyond just color balance, at least for the title sequence with the full moon, because you can...