Back in May I reported a rumor that Pentax is working on a new 360 degree digital camera. Quesabesde spotted a prototype of the camera at Photokina:

"It is a device consisting of two circular chambers, presumably with a coverage of 180 degree each, capable of generating a spherical image with a single shot."

Update: DCWatch published two more images with simulated screen capture from the 360 degree camera: