Optimus keyboard

I've just seen this Optimus keyboard (on engadget), coming out on the first of February. It's unique because each key has a built in colour screen on it, instead of the usual letter or symbol. The advantages of that system are clear - functions of some keys can change depending on the program being used - ie. Word or a game. It also looks fantastic, although they may well not release in the UK, and even if they did, I wouldn't be able to afford it!