During the fall of 2011, Carl Zeiss announced a new 25mm F2 Distagon in both the Nikon ZF.2 and Canon EOS ZE mounts.
The new lenses have arrived, and they look great. I've pre-sold a couple, kept one for myself, but still have another in the F mount available. You can see them listed at www.bigcameraworkshops.com if you're interested.

-Rob Skeoch