Does anyone know if the BG for the 5D2 works with the 5D3? I recall during the initial announcement that it was listed as being compatible, but subsequently removed from the list of compatible accessories.
I tried it (carefully) out of curiosity. It seems to want to fit, but it hits some kind of block before the battery-shaped protrusion seats fully in the battery compartment. Whether that's an unavoidable design difference or an intentional redesign, I don't know, but I do know that the BG-E11 has significant improvements (ie. quick control), so I'm not too upset that they made another one. I am a little upset that they couldn't release it the same day as the 5D3, though. The "naked" 5D3 feels so solid - it has weight, but in a good way. I really want to see how it feels with the full grip.
I've always thought Nikon's higher-end DSLR's felt like cameras that Batman would design.. The 5D3 feels that way to me, and I know it will be even more so with the grip attached.