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There's still been no announcement of a US DVD release date; but now... who cares? ;)
Update 12/18/08: According to this review at exclaim.ca, this DVD has "no extras to speak of," so you're definitely best off with the region 2 disc at this point. That's possibly just as well, since this version seems to be a bit hard to find...
By the way, Asia Argento is amazing in this. She's really grown as an actress since her early roles.