A lot of people are interested in high ISO performance of the new 40D. I shot a few ISO1600 shots today. You can see them below. All these shots were processed straight from RAW file without any adjustmetn in Digital Photo Professional(DPP). The TIF files convert with DPP were then exported to Photoshop CS3. Only resizing and slight sharpening were done in Photoshop. No other image adjustment were made.
You can see the Canon EOS 40D full review article here.