Nikon has a new camera posted on their web site: the D90, long rumored as the replacement for the D80.They just released the D700 in July, the D60 earlier this year, the D3 and D300 last November. Cameras are a commodity item now!
It used to be a body was in production for several years and the improvements from generation to generation were more pronounced. Now? They tend to be more incremental – and frequently small increments at that! The D700 is a D300 body with an FX sensor. A D90 is a D80 with the new DX sensor, Live View, and a movie mode. A D60 is a D40x with the new DX sensor.
On the other hand, new lenses are a much more rare event. They tend to stay in production for many years, sometimes decades. Lenses also hold their value; camera bodies don’t. Given that, better glass is the better investment.
The one nice thing about the new bodies is they seem to be making use of the previous generation’s accessories. The D90 uses the the MB-D80, the same battery grip used on the D80. Why you would buy a D90 if you still had a D80 is beyond me but you could. The D300 and D700 share the same grip (MB-D10), the same grip used with the D100. The SB-900 / 800 / 600 / 400 and SB-R200 Speedlites are usable on the newer cameras.
Nikon has finally released a GPS unit – the GP-1. I have no idea what took so long. Civilian mode GPS chips are also commodity and have been for a decade. That should have been a no-brainer accessory. Still, better late than never I guess.
Photography has never been a cheap hobby. Trying to keep up with the Joneses is downright prohibitive!