Features from wikipedia:
* An aluminium body
* Extra-durable polymer plastic keys
* 48×48 pixel (for regular keys) screens, Truecolor mode
* OLED (Organic Light Emitting Diode) screen for keys
* USB 2.0 and FireWire connectivity
* A separate ergonomic version
* 4-5 year lifetime
* A key-saver mode
* Support for animation on keys
* Ability to form a mosaic using a combination of key images
* OS independence
* An SDK for complete display customization
* Swappable Keys
Optimus Maximus Keyboard
Drivers for the earlier version, the Optimus Mini Three, have been available in Linux, Mac, Windows, Java and .NET.
Currently a limited production keyboard, the Optimus Maximus comes at a price of $1564.37 US, this keyboard doesn't come cheap! I'll wait until they get it into mass production, and the price drops!
Limited pre-orders start on May 20, 2007 at 3pm Moscow Time, along with more details on this keyboard.