Digital Photography Review just did their typical exhaustive review of the new Nikon D3S. This is one incredible camera.  Since I’m not taking the camera on a safari in Africa and I don’t need the incredibly high fps, I keep hoping Nikon will make a similar upgrade to the D700 soon. A D700 replacement should have the same low light performance as the D3S in a lighter package.  There really isn’t anything right now that beats this camera for the kind of low light performance that wedding photography really benefits from.  If Nikon doesn’t upgrade the D700 soon I might just have to go for the D3S.