Here is the list of Olympus E3's main features and detail specification

The Olympus E-3 – Main features:

Olympus E-3 with battery grip attached

Speed

• World's fastest autofocus* for quick and precise image capture
• Fully-biaxial high-speed 11-point AF system
• 1/8000th sec. high-speed and high-precision shutter control, X: 1/250
• 5fps sequential shooting with 19 image RAW buffer

Image Quality

• High-performance built-in image stabiliser to stabilise all lenses
  (up to 5 EV steps) with two modes
• High Speed 10 Megapixel Live MOS sensor
• Qualified image processing with new TruePic III
• High image quality with a variety of bright dedicated-to-digital ZUIKO DIGITAL lenses

Live View

• 2.5”/6.4cm multi-angle HyperCrystal LCD for greatest flexibility
• Real-time effect monitoring
• Pre-control over white balance and exposure compensation
• Preview of Shadow Adjustment Technology (SAT)
• 5x/7x/10x magnified view for precise focusing – especially for macro shots

Reliability

• Large viewfinder with professional-level coverage of 100% and 1.15x magnification for accurate image control
• Spotless photography with most effective dust reduction system (Supersonic Wave Filter)
• Splashproof body and lens system
• Professional quality shutter life of 150K operations

Additional features of the Olympus E-3:

• Based on the Four Thirds Standard
• Ergonomic design of body, control buttons and GUI for easy operation
• AE/AF lock functionality for individual customisation
• Second display for Super Control Panel
• ISO 100-3200 for wide-ranging sensitivity
• Accurate white balance with two sensors
• Built-in flash (GN13) and wireless flash control directly from the camera body.
• Wireless flash control in up to 3 groups (separate press release available for Olympus FL-50R and FL-36R flash units)
• High-speed USB 2.0 interface
• High-speed data writing and lossless RAW compression for quick processing
• Simultaneous writing of RAW and JPEG
• Dual memory slot for CompactFlash and xD-Picture Cards
  (incl. support for UDMA High-Speed CF cards and Microdrive)

New accessories for the Olympus E-3:

• Power Grip HLD-4 for ideal portrait shooting and long battery life
• Wireless flash units FL-50R and FL-36R
• Soft rubber dioptre-correcting Eye-cups DE-P3 (+3m-1)
  and DE-N3 (+3m-1)
• Focusing Screen FS-3 grid matte screen dividing image area in 4 x 6 sections. (Purchase & installation via Olympus Service Dept. only)