We have a couple of new preorder options including Amazon US and the first EU store:
Black lens at Amazon (Click here), Adorama (Click here), BHphoto (Click here), Wex UK (Click here), Amazon Japan (Click here).
Silver lens at Adorama (Click here), BHphoto (Click here), Amazon Japan (Click here).
And here are some low resolution image samples (Click on them to see a bit larger version):
