Long time lurker. Just signed up to say the info in link is wrong or old and the C200 does output 8-bit 4:2:2 over HDMI at 24p, and drops to 4:2:0 at 50/60p.
Here's a link to the manual (check page 139): http://gdlp01.c-wss.com/gds/3/0300027483/02/eosc200-200b-im2-en.pdf
Bummer about the codec being apparently no better than what's already on the camera (even though I'll be shooting RAW 90% of the time). I have to wonder what the point is, and they really should have given it a higher bitrate at least. Having said that, I took delivery of the C200 about a week and a half ago; and I have to say if you lied told me the codec was 10-bit, I'd believe it. Check out this guy's timelapse and he also says that there was no banding at all (downloads are enabled):
Fahnon got a reaction from EthanAlexander in LOL Canon... C200 Codec "Upgrade" details announced