Photokina is a photography trade show that is held every two years in Cologne, Germany. The camera manufacturers try to have something special to announce at the show. This year there are major new products from Canon, Nikon, Olympus, Fujifilm, Panasonic, Sony and more. Even Hasselblad has a new camera and lens. Here's a page that summarizes the announcements. Most of these products will be offered for sale in time for the holidays.
http://www.dpreview.com/showreports/Photokina2012
http://www.dpreview.com/showreports/Photokina2012