Three Canon lenses photos were just posted in a Chinese photo forum, source is from a Japanese website
Link: http://digicame-info.com/2012/02/ef28mm-f28-is-usmef24mm-f28-is.html
Canon EF 28mm f2.8 IS USM
Canon EF 24mm f2.8 IS USM
Canon EF 24-70mmm f2.8 II
It's very strange that 28mm and 24mm...