With as hot as the current stock of macbook Pro's run, you all must be dreaming if you think it would be thinner. My macbook pro (listed in signature), when surfing, idles at 60C. And that is with the screen down to 70% brightness.
I'm not saying apple isn't capable of engineering miracles, but this is getting dangerously absurd.
Oh, and if they do go ahead and use the "chiclit" black keyboard, it would allow them to make the vents on either side the laptop bigger, hopefully letting them provide bigger fans, and thus a cooler overall machine.
I just don't see how they can get any thinner. The DVD and HDD barely fit the height clearance. Unless you honestly want to have the 160GB 4200RPM (ouch) HDD from the iPod classic as your biggest choice. However. That said, the new images popping up suggest cooling through the sides, and user-assessable HDD and RAM in the back. This design would let them taper the front end of the machine (ala the MacBook Air) and perhaps make the machine's front end thinner, but them you have the problem of where to put the DVD drive with the side-vented cooling system. perhaps that patent filed a couple years back showing a DVD within the screen might work, but that is just to abstract for me. 😕
Leave it to Ives to find a way to do all this.