In case you haven’t seen it, you should really check out the Optimus keyboard. It’s a concept keyboard where each key is actually a tiny LCD kinda screen. This allows you do display whatever the hell you want on your keys. Here’s an example off their site:
I am so totally picking one of those up once they come out. 
It’s a tiny OLED screen, cheaper than LCD
Haha, whatever.
Looks like the pixels or whatever they are could be a little sharper on those OLED screens
Hmm, I was thinking they were renders. Even if they aren’t, better than nothing.
But yes, would be nicer if there were sharp. Then again, if it is real, it’s just a pre-production model…