I have another teaser to report. On Zeiss’ site a post showed up :
It is here: the lens at the top of the wish list of our community on Facebook and Flickr. Now you can look forward to exploring entirely new creative opportunities. In the next few days, this is where we will be showing you everything our new SLR lens has to offer.
If you register on their Facebook page you can get the latest news (and pics) about the the upcoming super wide lens. Since they write that this lens is «at the top of the wish list of our community» I hope it will be a 15mm f/2.8 lens. Just to make us all happy. :-)
And, yeah, the lens will be available with a Canon mount too.