No explanation was posted with the photo so there's no way to tell exactly these components are, but we can take a few guesses. The original Kindle, K2, and other prototypes on the right are fairly self explanatory, though i do wish I knew why the K3 is wired to a white board which is wired to a computer mouse.
In the center of the display are 3 f what looks to be wireless modules (3g or Wifi), and on the left are 4 development boards which may have been the very earliest prototypes. The rest of the items I'm not sure about.
All in all, a very cool photo. If anyone at Lab126 cares to share more details, I am all ears.