Fully programmable miniature LCD screens replace static tactile keys.
Although not the first of keyboard interfaces to utilize LCDs for buttons, the Optimus Mini Six keypad designed by Art Lebedev is a cool and convenient addition to any computer user's desktop. With six completely programmable buttons to be used as shortcuts, widgets, macros and functions, the Optimus is useful for just about any situation. No additional information on pricing was given but the Optimus keypad is expected to be released by the end of 2011.
In addition to the six button keypad, Lebedev has also been working on a full LCD keyboard to be released in 2012. With every button programmable to display letters, symbols and shortcuts, this keyboard can fit every users needs. The keyboard also has additional displays to include widget-like information such as weather and messaging. These screens will likely be programmable for additional gaming info as well. Check out Lebedev's site for more interesting designs.
I remember seeing his website show a prototype more than five years ago, and every time I have checked back it will be arriving "current time+2Q"...