DPreview has a review of the Olympus E-500 EVOLT:

The E-500 EVOLT was announced on 26th September 2005, almost exactly a year after the E-300 which was the first affordable Four Thirds System digital SLR. The E-500 features an eight megapixel Kodak 4/3 Type CCD sensor, a Four Thirds System lens mount and a more traditional pentaprism viewfinder. Appearance wise the E-500 looks more like a traditional film SLR than the long and flat E-300 with its sideways swinging mirror and viewfinder setup. Improvements over the E-300 include an all new metering system, a larger 2.5″ LCD monitor, better control layout and other firmware delivered improvements.

Read the rest of the review at DPreview.