As a pro-class cameras, E-5 still retain all the good things that exist in the E-3 especially toughness magnesium alloy body is made from a solid plus weather sealed. The camera is capable shutter used up to 150 thousand times the snap is claimed to have the fastest autofocus speed in the world even though 'only' supported by the AF module which has 11 points (all cross type).
Here are the full specs:
12.3 MP Live MOS sensor (4 / 3 2x crop factor)
TruePic V + image processor
Sensor-shift Image Stabilizer (IS)
3-inch LCD which can be folded, 920000 pixel screen resolution
100% coverage viewfinder
HD 720p, 30fps
no longer use the xD card (now dual SD and CF slot)
external mic ports, HDMI, USB and A / V
As a companion to E-5, available lens Zuiko Digital 12-60mm f/2.8-4.0 SWD.