I'm a D600 owner and planning to purchase a D800 very soon as a second camera to go with my Nikon FX lenses.
However, I'm wondering if anyone knows if there will be a replacement model (e.g., D810) in the near future. Thanks in advance for your help!
I have heard of no rumours of any 810, but you can be sure there is something in the works. When? I agree with the majority of people who say the D800/e has legs. I was an early purchaser and have had zero issues with the camera. Best piece of photographic technology I have ever purchased.
If the price is coming down, I would purchase an 800e. I am sorry I did not plop down the extra $300. In my opinion, you can't go wrong with this camera. My only gripe with the D800 is I wish it had more fps capability and a bigger buffer. If they come out with an improved one, I would suspect these two features would be enhanced. My guess is, the buffer is what is holding back the fps in continuous shooting mode.
A long burst simply fills the buffer and shuts the camera down until it clears…. this is a major pain when it happens, especially in the middle of an action shoot (Like nature photography or sporting event). An 810 would be substantially more desirable if this is what they fix!
If you are shooting portraits or landscapes… get in the game!

You won't be disappointed.