The Apple Creative Summit is Oct 27-29. It is possible (though not guaranteed) that an update to FCPX could be announced there. www.fcpxcreativesummit.com/
IF there is an FCPX update, it is possible (but not guaranteed) it might include C200 raw support.
Anytime a new camera or codec is released there is often a delay before each app supports it. This varies based on the app. E.g, I don't think Premiere Pro yet supports C200 raw either. I think DaVinci Resolve does.
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