We're told that Canon is developing a new supertelephoto lens that is slower than f/4. One immediately thinks about an update to the EF 400mm f/5.6L, but we're told that is not the case and it'll be a new lens altogether.
While the source couldn't nail down the exact focal length, speed or even if it was going to be a L lens, they did say the hope was to have such a lens to be announced some time in 2016 and that it would be “affordable”.
This sort of lens is definitely missing from the Canon lineup, both Tamron and Sigma have had a lot of success with 500mm and 600mm zoom lenses.
More to come…