Nothing indicates that Canon have a new sensor ready.
I do not understand all the rumors that are flourishing.
That a Foveon-like sensor is to be launched is a joke, what is the probability that Canon could do anything better than the five major sensor manufacturers? Sony alone has over 50% of the whole world wide sensor market.
Someone stated that the color accuracy would be Foveons strength, this is completely untrue.
It takes a lot of processing power to get the colors tuned in a Foveon-based sensor, there are many articles written about this topic and problems.
The desire for a new sensor from Canon is larger than Canon's ability right now to manufacture one.
But we can all dream
And we have lots more processing power, even in camera, available to the average user, to say nothing of the systems that are available for design simulations. Not saying it's automatically a solution, just pointing out that we have a LOT more CPU horsepower, to say nothing of a properly designed camera chip having a few specialist bits as ASICs.