Rumor: Canon EF 100-400mm f/4.5-5.6L IS Replacement Set to be Announced Soon?

It appears as if Canon might soon announce a new EF 100-400mm lens. The production of the EF 100-400mm f/4.5-5.6L IS may be “coming to an end soon”. The new 100-400mm should go into production at the end of 2013 or beginning of 2014. The rumor also suggests that Canon will not starting production of the new 100-400mm until the production figures for the EF 200-400 f/4L IS 1.4x (Amazon | Adorama | B&H) are not in line with demand.