I got my 2.0... I have never laid hands on the original so I can't compare. Its a mac layout, whereas the black one is a windows layout. The black comes with the 'optimizer' button where the caps lock should be, but you can reprogram it to be a 'normal' keyboard layout, as well you can program the white one to be the optimizer layout. (I'm sticking to without)
The keys tactile response is AWESOME. But that's the only good thing I have to say...
The packaging was the box it comes in, wrapped in cardboard. no styrofoam, no bubble wrap... nothing. The power button on the keyboard had popped off, and the casing was popped apart (although it snapped back into place no problem).
My biggest beef, the pre-order page had pictures of caps lock keys having an LED built in... I got an email saying they removed the optimize key from the mac version and offered a choice between the white and black model. Of course, I took the white one, but they did not mention the lack of LEDs on the final release! Seriously... $150 for a keyboard, and no LEDs for caps/scroll lock?! I am extremely upset. I can understand a sub $20 keyboard not having LEDs, but really... (and I've seen $15 keyboards with the lights).
I'm working on filing a formal complaint.