This is the first image of the upcoming Canon EF 70-200mm F2.8L IS III lens, leaked at the Nokishita-Camera. It is expected to be announced on June 7, 2018 at 12AM ET along with Canon EF 70-200mm F4L IS II lens.
Canon EF 70-200mm F2.8L IS III lens is rumored to cost $2,099 and F4L II for $1,299.
Below is Canon EF 70-200mm F4L IS II lens.