I am a fan of Sigma lenses' rendering and would be all over this lens... if it came out. Which brings me to my point: what's with the hype? Where does it say that it IS coming out? Did I miss an official announcement? Or is it just a rumor flare-up? If I missed it, could someone post a reliable link please?
EDIT: I stand corrected. It IS coming.
http://www.sigma-photo.co.jp/english/new/