Now what would be nice is not video resolution greater than current FullHD 1080 but more frames recorded in that resolution like say 100fps or so.
That I believe will do more for video than bumping the resolution 2 fold.
More than happy with 720p res to be honest on a 50" screen, only so many wrinkles and pimples I want to see in high detail but fast action and smooth pans - now that is a different story.
Of course Cannon will do it's usual marketing crap and bump the res numbers as a must have. As stated a move from megapixel war to video resolution wars which are of no real benefit to artists using the tech.