The next major photo show in the U.S. is PMA 2010 (PMA is the Photo Marketing Association), February 23–25 at the Anaheim Convention Center, near Los Angeles. I keep hearing conflicting rumors about what the rumors are going to be, so I can't confirm whether any rumors you might have heard are actual rumors or not. Actually one rumor I've heard that won't seem to go away is that Nikon is preparing a digital M-mount rangefinder, with three manual-focus M-mount DX lenses including a 35mm-e ƒ/2. But it's a rumor.
Another rumor is that Olympus is coming out with its pro-level Micro 4/3 camera, and it will be smaller than the E-P1/2. Or, maybe not; because you can't trust rumors.