They have made a lot of promises, and for every promise, later a excuse. I'd take a wait and see approach to see if they can actually produce and support them. Companies often have a tough time delivering on the hype.
All they have done is provide the best video IQ below $10K for around $3K. The first gen is finally out and shipping in quantity.
I was a Canon apologist for the longest time, but show me ANY Canon Cam that can do this.
No chance with the 5D3, not even on a c300(to be fair, the c300 has big-time advantages, in other areas not emphasized in those shots).