Sony also has some interesting new stuff, like the 'SLT' A55 and A33 cameras
Phase Detect AF in a Live view camera using a transflective (fixed) mirror. Unfortunately, it's missing a few killer features, like continous AF in high speed shooting, PDAF+CDAF hybrid system, and full manual video (and 24p shooting), but this new formfactor will be one to watch. It's about as small as the Panasonic G cameras but with a larger (and more light-sensitive) APS-C sensor and faster AF. Win!
Cosina-Voigtlaender has also announced they are joining the Micro Four Thirds consortium, so hope to see some nice niche manual focus lenses from them.
About the only holdouts right now are Panasonic and Olympus - they'll likely have something to show at Photokina in September.
Wind, Sand and Stars.