Sony F65

Sony enters the 4k market with the F65.   They'll give RED a run for the money with this camera with an 8k sensor.  The F65's got a 20 Megapixel Super 35 sized sensor with an active image area of 18.3 Megapixels with a 1.9:1 aspect ratio.

I got my hands on it at CineGear and it basically feels very F35ish.

The battery looking thing is actually a  dockable SRMemory Card recorder.  The capacities available are 256 Gb, 512 Gb 1TB.  This is where the data rates don't add up.  A memory card recording at 24 fps will store about an hour of footage in 4K16bit RAW and up to 8 hours of HD.

http://pro.sony.com/bbsccms/ext/digitalcinematography/f65.html