Ive been watching the Optimus keyboard developement for over a year now and as expected, the actual reality of it is quite a way from the initial prototypes (limited screens, key size, cost etc - but that's all to be expected).
At the end of the day, who is going to be willing to buy a PC, then spend the same amount again......... on the keyboard lol
Would be nice if/when OLED displays become more mainstream and possibly cheaper, but i wouldn't get too excited about this keyboard. I lost interest ages ago :P
(if you ARE interested, the best place for info is their blog:
http://community.livejournal.com/optimus_project )