PocketWizard ControlTL MiniTT1 & FlexTT5 6.104 Beta for Canon is now available for download
The release notes can be found here here
According to Rob Galbraith
, the new beta "adds support for the Speedlite 600EX-RT
and Speedlite Transmitter ST-E3-RT
Rob also adds that "... this beta firmware release does not add compatibility with the Canon EOS 5D Mark III, EOS-1D X or EOS Rebel T4i" and quotes LPA Design's statement that the "5D Mark III is being reverse engineered and is our highest firmware priority."