It is a pretty good implementation from what we are seeing in the pictures, with elevated letters on a chiclet-style keyboard, complete with its own battery for the backlighting. It should enhance typing speeds quite a bit, compared to the touchscreen keyboard for people who miss the good ol' tactile feedback ever since they got their first iPhone. No word yet on how much will this case weigh, but at least now you can be watching movies on your iPhone 4 and shouting "Look, Ma, no hands!".
iPhone 4 Specifications | Review