In addition to the two new 
CN-E14-35mm T1.7 L cine zoom lens and the CN-E31.5-95mm T1.7 L, Canon is also announcing a series of new firmware updates that further enhance and expand the capabilities of the EOS R5 C, EOS C70, EOS C300 Mark III and EOS C500 Mark II cameras. The update brings a high-resolution Clear Scan function that provides a more precise range of 50 to 250 Hz and better sync support when shooting LED screens in virtual productions. Also added is an option to resize the in-camera waveform monitor and metadata support for the latest Canon lenses.
Canon EOS R5 C
Improvements to the EOS R5 C include support for the EF-EOS R 0.71x bayonet adapter, faster switching time between photo and video modes, a power-saving mode, 2x magnification for 8K MP4 shooting, and an option for a digital teleconverter to quickly magnify the telephoto range of the lens you're using (though with a loss in image quality since it's electronic magnification, not optical).
There is no more specific information on when these updates are scheduled to appear. Just recently, new firmware version 1.0.3.1 for the R5 C was released, which is supposed to improve the image quality of Canon Log 3 when shooting in XF-AVC or MP4 format. In the course of this, the camera received a Netflix certification.
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