Ganymede ..... My assumption is based primarily on the price. I just can not see them selling the new black version, which has a normal price of $2,899, for such a low price. The price indicates a closeout sale.
Another reason is that the 8X is no longer listed and the 10X shows limited stock. That indicates to me they are clearing out the prior version in preparation for the new black version. They did the same with the old Swaro EL SV models that were replaced with the Profield versions.
The web page for the 8X42 shows Sold Out rather than Out of Stock.
http://www.cabelas.com/product/camp.../Ns-CATEGORY_SEQ_104217480?recordsPerPage=108
Other dealers were selling the grey version for a similar price.
The differences between the original grey version and the new black version are small. The biggest is the color difference. Another change is a new eye cup that added another intermediate position. However, the new cup also fits the grey version. There was also some discussion that there were some small tweaks the focus, but nothing specific. I have not seen any comments that the optics were changed. I personally like the grey.
I would not put much stock in the photos. Vendors mess that up all the time. Even vendors that specialize in optics seem to have a hard time getting the photos and specs correct. The photo being used by Cabela's is not the best and I can not tell for sure what color it is.
Hope that helps.