Canon is expected to announce several firmware updates for Canon EOS 5D Mark III, Canon EOS-1D X and Canon EOS-1D C in April and May, 2013.
New firmware for the EOS 5D Mark III DSLR camera by the end of April to enable auto focusing down to f/8 (currently compatible with maximum apertures up to f/5.6). This has been confirmed by Chuck Westfall of Canon recently at the NAB Show in Las Vegas.
The new firmware may also address the slow AF assist issue with the Speedlites. The update will allow users to take advantage of AF when shooting distant subjects, benefitting sports and nature photographers, particularly when using telephoto lenses.
5D Mark III, EOS 1D X, EOS 1D C Firmware Update Coming Soon
Canon EOS 5D Mark III firmware
Expected to be released in late April, 2013, with version 1.2.0 or version 1.2.1
Canon EOS 1D X and Canon EOS 1D C firmware
The Canon EOS 1D X camera is expecting a new firmware to be released in May to address the slow AF assist issue with the Speedlites. The EOS 1D C hybrid DSLR camera also has a new firmware coming out to enable the user to record video in 25p in 4K resolution. Canon is trying to finish up the final testing of the new software EOS 1D X expected to release in May and EOS 1D C expected to release in late April.