Cokin has added a filter holder kit (complete with circular polarizer and lens adaptor) to the range that fits the superb Nikkor AFS 14-24mm f/2.8. While this sounds promising for landscape photographers, don't get too excited. For one the price is $625, and two, the maker warns of vignetting below 18mm (on a FX body). Still, if you simply must have one, check out Adorama at this link.
As a side note, Cokin won't allow the photo-press (and presumably members of the public) to view around the factory, as it's owned by the French government. All the more reason to take a look I say. How about you?