Actually, they are different. The earlier model was, officially, the 800D. The current model is, officially, the 800Diamond or, unofficially, the 800D2.
I am sure there is something on the B&W site explaining what is new in the 800D2. I covered some of that in my review:
http://www.stereophile.com/content/bampw-800-diamond-loudspeaker
I am sure there is something on the B&W site explaining what is new in the 800D2. I covered some of that in my review:
http://www.stereophile.com/content/bampw-800-diamond-loudspeaker