Either that or it is a 26 MP high end replacement for the 20 MP EOS 1D X Mark II.
Somehow I rather doubt this, at least in a literal sense. Are there many saying that the Sony A9, in spite of all the praise that can be directed toward it, is a replacement for the 1DX2 in all respects? Then, assuming some of Canon's mirrorless capabilities don't even match Sony, how can they produce a replacement for the 1DX2 that is mirrorless? I'm not saying it couldn't be a higher level but replacement, that's asking a lot.