I just found out about Unholy last week from a co-worker. She has been following along some kind of game/storyline at the movie's website for a few months now - when she described it all to me it sounded very cool and now I have been doing some digging on the subject, too.
It is all very long to explain in a post so I can give you some links if you are interested:
http://www.unfiction.com (the unforums)
http://www.livejournal.com/userinfo....er=unholymovie
and there is also a little bit at the Unholy page at imdb.
Basically, what has been happening at the site is the main character from the movie (Martha = Adrienne Barbeau) has been emailing messages to visitors and getting them wrapped up in a story about Nazis and secret WWII experiments. It's very trippy! I have no clue when the movie will finally come out but all the online discussions around the site have been interesting to dig through. The livejournal has a lot of articles from horror sites so I looked at that one the most.