After a weekend at Cine Gear 2014 in Los Angeles, it became apparent to me that we won't be seeing any replacements to the EOS C100, EOS C300 or EOS C500 anytime soon. We were told that the EOS C300 is selling “extremely well” and that the EOS C100 is also selling “better than expected”. The EOS C500 is a bit different and isn't quite as popular as Canon had hoped, but it could be that the camera is in no mans land as far as price/performance and what people are using $20,000 cameras for.
I did get the impression that Canon does plan to be aggressive in the “A camera” space and will take direct aim at the king ARRI. I'm hypothesizing this point, but after talking to various people, I get the feeling that Canon is serious about clawing its way into the professional, large budget cinema market. With the consumer space in photography shrinking, it does make sense to put resources into new markets for growth.
I don't think we'll see any Cinema EOS announcements until next April at NAB 2015.