Whatever happened to the movie 'Coin Locker Babies'?

‘Coin Locker Babies’ was one of the weirder and more memorable books I have ever read, from Ryu Murakami. There was a movie rumoured a few years ago, to star Val Kilmer and Liv Tyler, but rudimentary searches (imdb etc.) hasn’t turned up much information. Any jellies out there know anything more than the interweb?