I think everyone is getting worked up over this just a little too much. These are FIRST and FOREMOST 'STILL' CAMERAS. (Yes, the 5DII was a still camera that was a game changer in the "video world", but it was still a 'still' camera). I'm not saying I don't want to see Canon, or anyone else, "not innovate", but seriously, some people are making a mountain out of a mole hill out of this. I am heavily invested in Canon personally and professionally, between stills and video, to the tune of about $60k, at least, BUT even more in Panasonic. Professionally, well over six figures, and honestly I couldn't care less about the GH4. If it wasn't for this forum and one other that I frequent, I wouldn't even know it exists. I would venture to say that a lot of the people that I work with don't know about it either. On the pro side, people are just starting to figure out how to work with 4K-barely. Unbelievably, there are still those that HD is a mystery to. And it's more widespread than you would think.
I'm not saying I'm not interested in 4K, because I am. And I doubt I will buy another professional (TV) camera that isn't 4K capable, even though it probably won't even be a selling point to my network clients for years down the road. But if my next still camera doesn't offer it, I don't care. Hell, I never shot a frame of video with either of my 5DII's and I've used my 5DIII for video ONCE. And it wasn't even close to being used as a primary camera. It was the fourth camera/reversal shot.