I first saw this nearly two years ago. The consensus then was that it was a one-off art project, but the Optimus keyboard is apparently for real, and shipping possibly this year or early next. It's the work of Moscow's Lebedev Studio, and features programmable LCD screens on the keys that can be mapped to any possible language, or for specific applications, like Photoshop or games like Quake.
The price is still hazy but $300-500 seems to be the general range. More here, and the design team's blog is here. (The design team is here -- and yes, they do look like The Brothers Karamazov.)