Ronin movie?

Learned today at Ain't It Cool that Frank Miller's Ronin is on the way to becoming a movie. I just re-read this last month and couldn't help thinking that it would probably be in the pipeline soon. One of the things I like about the story is that it includes a character who doubts his identity, a plot-genre I recently realized I'm a big sucker for; Total Recall is a great example of this. Hopefully that won't be excised from the Ronin story, else it turns into just another sci-fi action flick.