Press Record.

This one is a little old, but somehow I never researched it. Now that I have a little time...
Jawbone.com has nothing more but press clippings, and Aliph is more excited about the sine waves than showing off the design. Bah.
At the moment it still hasn't been released, but there has been a live demo. Looky.
The hottest tech demo of the day was a new product called Jawbone, a noise-canceling headset for cell phones that will be out later this year and sell for "under $150," says the manufacturer, San Francisco-based Aliph. In a demonstration of the headset from outside the building on a call to the auditorium, with a live video feed on the screen, a user talked over the sound of a boom box, a weed cutting and a blender. By switching on the noise-canceling device, the background noises all but disappeared and the speakers on the stage had a clear conversation with the demonstrators outside, despite the fact that the viewers could clearly see the blender and weed cutter were still going strong.
http://www.aliph.com
http://www.jawbone.com
compliments of google/engadget