I found this link over at CR. Below is an excerpt from the article.

"The plan is to release it this year, said Mike Owen, communications manager for Canon's professional imaging department in Europe. He spoke at a Canon press conference yesterday at the Photokina show here."

It's going to be a bit heavier than the 400mm f/2.8L IS II.


http://asia.cnet.com/canons-new-supertelephoto-lens-probably-launching-year-end-62218773.htm


Even if its released next year would be cool, but at least they're talking about it again.

Rich