Well I took the plunge. I recently ordered Nikon's newest DLSR, the D800. Interestingly, it might not be my primary sports camera. My D700 will continue to serve that duty (at least that's my present thinking). At 36 megapixels, the potential image storage challenges could be substantial (particularly for lots of sports photos). It only shoots at 4 frames per second in FX mode versus 8 frames per second with my D700 and vertical grip attached. ISO low light, low noise performance should be about the same as the D700.
So why order this camera? I can still use it for sports photography (I will as a second body attached to my Nikon 70-200mm f/2.8 lens for soccer). In fact it has a few crop modes that can extend the reach of my 300mm f/2.8 lens. There's no law that says I have to shoot a maximum resolution (which for sports I absolutely will not). And it's still much cheaper than a D3s body (used) which I almost purchased while at B&H in New York recently for $4200.
Check out this early preview.