A satellite image shows the dust plume raised by rockslides in the mountains near the epicenter. The link at Gawker.com includes a time lapse sequence of the satellite view, and a link to the video of the immense dust clouds from the ground.
UPDATE: Lee Allison at Arizona Geology has been on top of the latest developments on the Sierra El Mayer quake. He has posted a number of pictures of road damage on Highway 5 south of Mexicali, including this one (photographer Danny Ashcraft):
Note the right lateral offset of the road surface
UPDATE #2: The Southern California Seismic Network is beginning to release some of their 1,500 photographs of the fault ruptures on the Borrego fault and others. An example below!