bholliman said:
+1 People buying hi-megapixal bodies would primarily be using them for landscape or product photography, where they will normally be shooting on a tripod at the lowest possible ISO.
Why on earth do you expect that?
The leaked camera specs points to a far more flexible camera body than the current 5DIII which is used for a very wide range of situations only being hampered by its relatively low fps.
So just as the D810 is being used for everything - including sports, wildlife, macro, astro, fashion etc. etc. - so we should expect this camera will used by all photographers that want to be able to do more with their camera. Especially, if the new Canon gains fps just as the Nikon D810 does when shooting in crop mode (up to 7 fps) allowing it to excel at action and sports. Here I hope for 8-10 fps in crop mode (time will tell).