That's quite a lot of pixels! It's toward the end of this video. It'll be obscenely expensive, but you how these things come down in cost...
http://www.studiodaily.com/2013/04/nab-2013-video-astrodesign/
They are also part of the micro-four- thirds group, and make a 4K micro four thirds camera that records up to 60p
http://***URL removed***/news/2012/01/26/Astrodesign_MicroFourThirds
more here:
http://www.astrodesign.co.jp/english/product/ah-4413_ap-4414_am-4412