Canon Confirms AF Assist Beam Firmware Fix for 5D Mark III and 1D X is Coming

A thread on Canon's forums regarding Canon EOS 5D Mark III and 1D X DSLR cameras being slow to acquire focus when using a Speedlite's AF Assist Beam prompted this response from a moderator (Stephen):

"Canon has confirmed that, depending upon the shooting conditions, it may take slightly longer for the EOS 5D Mark III and EOS-1D X digital SLR cameras to acquire focus when using the Speedlite's AF Assist Beam, compared with that of the EOS 5D Mark II and EOS-1D Mark IV digital SLR cameras using the Speedlite's AF Assist Beam. We are developing a firmware update to enhance the focusing feature for the EOS 5D Mark III and the EOS-1D X. The schedule for release of this firmware update will be announced shortly."

Stay tuned for more info...