Hmm bit strange rumors though.
MPix -king: 1-line is always about speed, not mpix. Are they going to make some 60MPix+ monster at 30fps?
Ergonomics: I haven't held anything better than 1DX so I hope they don't break the mold
Video: Half of me don't care, the other half hopes to get good camera with 240fps (or faster) recording for sports. Currently there's no good options (for me) which are budget friendly that would shoot 240fps. Literally cell phones are best option at the moment.