UPDATE: The Nokton 10,5mm lens is now on preorder at BHphoto (Click here).
Other US stores are selling the lens. Like [shoplink 53940 ebay]CameraQuest (Click here)[/shoplink] and [shoplink 54016 ebay]Photovillage (Click here)[/shoplink].
P.S.: In Europe at [shoplink 53816 ebay]FotoMundus (Click here)[/shoplink] in Asia at [shoplink 53614 ebay]Taku (Click here)[/shoplink].