The replacement for the Canon EF 16-35mm f/2.8L II is rumored since a while. Latest murmurings has it that the EF 16-35mm f/2.8L Mark III is already being tested out in the wild by select photographers.
The announcement of the EF 16-35mm f/2.8L Mark III may come along with the announcement of the Canon EOS 5D Mark IV. But since no one really has a clue when the EOS 5D Mark IV will be announced, it is still nothing but speculation.[via CR]