I have been waiting for a keyboard like this for years. Now we finally have one coming to market, hopefully around 2006. I have long thought that a keyboard whose key caps could adapt to whatever input symbols were most relevant would be incredibly useful for a huge number of applications. So did these folks, and they apparently have created a keyboard whose keycaps aren't printed in the factory - they are tiny displays showing whatever glyphs/icons the computer wants them to show.
But unlike just a touch sensitive LCD panel, each key is still a distinct physical key - so you get tactile feedback.
I love the idea of a "Photoshop" keyboard. That alone could save a good amount of time for graphic artist type folks. Now if only Kinesis would license the technology and put it into their keyboards (I can't work without my programmable Kinesis!).