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Not only 4k with global shutter, but they obviously had a good look at 5d3 Magic Lantern: 12ev dynamic range with 12bit raw recording (should keep data rate a bit down vs. 14bit ML). And it has a swivel screen :->
http://www.blackmagicdesign.com/products/blackmagicursa
http://www.blackmagicdesign.com/products/blackmagicursa