Interesting observations on lens mounts, but back on topic: no need to bother unicorns or flying pigs, Canon very likely will deliver something new in the imaging sensor compartment this turn. They already have, with DPAF; little advance for stills shooters, big one for videographers.
Whether this rumor is a hoax or not I don't know, I can only say I'm pretty sure something new is coming in the sensor tech area. It's not gambling to think so at this point since it's not a matter of "IF", but "WHEN" it'll come, presumably sooner than later. Smaller sensors first, then bigger ones. As usual.
If I remember correctly, there was another tiny bit of information in this CR1 rumor as soon as it appeared, an acronym or something similar, relative to this presumptive new sensor tech, which was soon removed: does any early reader of the rumor remember what it was exactly? Or it's me going nuts?