We were first to report this possibility back in August, saying that Canon was prototyping various sensors for the EOS 7D Mark II (including a 24MP sensor), now a new rumor surfaced that has word the Canon EOS 7D Mark II could indeed have a different sensor than the 20MP sensor of the Canon EOS 70D (most speculation were suggesting Canon could reuse the same sensor). Unfortunately there is not much more new to report yet. The announcement for 2014 got another confirmation, that the EOS 7D Mark II will be more “pro-video-oriented” has also been confirmed (though no one really knows how the 7D2 will beat the excellently featured EOS 70D). According to my sources, Canon’s plans are to push a 24MP sensor into the EOS 7D Mark II, but everything depends by the noise/high ISO performance, which is top priority for Canon
As you can see, everything is still very obscure. There will be an EOS 7D Mark II, it will come in 2014, and it has to be more feature rich than the EOS 70D (but how?).