Yes, it's been out here for ages as Switchblade Romance. Yes, it's been out in France as Haute Tension for ages too. But the US are only just getting hold of this beauty, so the media avalanche of trailers and clips just keeps growing.
If the killing is realistic, then credit must go to the legend that is Gianatto De Rossi, the special make-up effects wizard who worked on the film. De Rossi has worked with some of the best directors in the world (Fellini, Lynch, Bertolucci), as well as some of the lesser (Lucio Fulci on Zombie Flesh Eaters and The Beyond). Now a seasoned pro after 40 years in the special make up effects business, his work is more impressive then ever. This violence is really hard to stomach at times but serves to shape the finished product into an unforgettably visceral viewing experience.