Prominently missing from the marketing blurbs is anything like "greatly improved light sensitivity".
The ISO range is unchanged from the last two releases:
Canon EOS 450D / Digital Rebel XSi: Digital Photography ReviewSo it's 12 megapixels now. Big whoop.
• ISO 100
• ISO 200
• ISO 400
• ISO 800
• ISO 1600
Nikon is kicking Canon around the ring, so I won't be buying a new Canon dSLR this year. Instead I'll be seeing what the new consumer end Nikon looks like. I can probably get a decent price for my Canon IS lens ...