got hold of several pictures of what apparently is the new iMac keyboard, which is meant to be the same one that the MacBook's are using, except it's for desktop use.
The pictures are from a website in Hong Kong and are aparently of a pre-production keyboard. It looks like the real deal, although the Control keys are missing the Apple logo, which is odd.
It doesn't look very ergonomic, nor too comfortable to type on, but it's hard to tell from a few pictures, but it's less than 1cm high.
You can check out a wide range of none fuzzy pictures that haven't been shot with a camera phone here