This is interesting but, it’s still kind of useless information. What would really get me aroused is a playable demo of Akumajo Dracula PS3/360. We know it got passed the FMV trailer that we’ve all seen, there have been motion capture actors that were on record saying they did a few days to a week worths of work on scenes from this cancelled game, which leads me to believe a very bare-bones demo was conceived at some point.
No one would have ever predicted a Castlevania: Resurrection demo would be leaked, decades after the fact no less, so there’s still a possibility that this Akumajou Dracula demo might be leaked one day.