I think that by referencing the 5D MKII that they are alluding to a 4k FF DSLR or MILC without crop and probably 422 Clog & 30 FPS without crop or at super 35 crop mode in the near future as both a gateway into their Cinema line, and as a companion. I remember they made a big deal about how easy it was to match the 5D MK II to the digital cinema cameras at the time. Bay used up dozens of them when filming Transformers, as sad as it was to see so many canons destroyed, they got the shots they wanted. Big production companies want DSLRs and MILCs they can beat up for stunt / action shots, and B shots, that can pair up with something like the C700. On the other side, one might argue that that is what the C200B is for.
On a different note, the C100 MK is getting passed up by most indie filmmakers now (even though I still love mine for shorts), and the C200s RAW Light is restricted to CFAST cards, which makes it stupidly expensive. We went with a C300 MK 2 and Atomos recorders, and it came out to be cheaper than rigging out a c200 with enough CFAST cards for a shoot. That being said, Canon put itself in a box where it doesn't really have a decent 4k entry point that shoots in log, and for that matter, even not in log...