Canon USA has posted 3 new videos on YouTube about firmware 2.0 for the Canon EOS 1D X DSLR Camera.
The first video is about setting up the firmware and others are the videos about AI servo controls and AF point management and exposure options. There is also a long and detailed article at Canon Digital Learning Center about the firmware.
Canon EOS 1D X Firmware Update V2.0.3 Explained by Videos
Below are three videos put out by Canon Digital Learning Center, describing the additional features of Firmware 2.0.3.