[shuttertalk]

Oooo... Dpreview have posted their preview of the D50:
http://www.dpreview.com/articles/nikond50/

Although quite similar in use and appearance there are some noteworthy differences between the D50 and D70, we have detailed all of the feature / specification differences in the table below. To summarize the most important; the D50 has improved auto focus especially in the area of motion tracking, it has a new auto AF mode (which automatically switches between single and continuous AF depending on the subject), it has a lower resolution metering sensor but that sensor is a newer generation than the one used in the D70 (and D70s) - spot metering circle is also larger, the maximum shutter speed is 1/4000 sec, continuous shooting is 2.5 fps, it has a better viewfinder eyecup, the LCD monitor has increased to 2.0" in size, the D50 takes SD cards (not CF), it's slightly smaller and lighter than the D70 and several features have been removed or simplified to make the camera easier to use.

The only key difference between the D50 and D70 from an image pipeline point of view is that the image processing algorithm has now been tweaked to improve rendition of highlight detail (to clip less and have a softer roll-off to the highlight). It's also worth noting that the D50's default color space mode is IIIa which is still sRGB but is described as being optimized for nature and landscape photographs, you can see the difference in the sample on this page of our D70 review.

No doubt a lot of people will be comparing the D50 to the D70, and also with the competition - the Canon 350D and the Pentax *ist DS...