I see nothing to suggest that this is recording movies off anything other than a centre crop.
I don't see pixel binning working on a 3:2 6K sensor in any way that would make sense. I'm 99.9% that the movies are all centre crop.
I didn't read that about stills, i'd have assumed they were full RAW, 14bit.
Also there's no mention of whether the data in the RAW is linear or log based - 8bit linear would be utterly useless and others have pointed out banding in the movies which originally would have thought it was compression based but maybe not. So 8bit linear is pointless, in fact only 12bit linear starts getting into the realm of normal.
Some clarification from Sigma would be useful, but i guess we don't have to wait that long.
I really want to like this!
cheers
Paul