Actually Panasonic Pro has a very similar camera head but with a 1/4" sensor and the first time I saw it I commented that I'd buy one in a second once they made a 4/3" version.
http://panasonic.com/business/provideo/AG-HCK10G.asp
I was about to post a link for this camera and then noticed you'd posted it already. It doesn't seem to be too much of a stretch that Panasonic could create an m4/3 mount version, with an HD SDI and maybe HDMI output. Then again, I'm not a camera designer.