[citation][nom]eddieroolz[/nom]Not sure why people dismiss these things right off the bat, like "noise" "pointless" and such - there must have been a point to develop this, and the noise wouldn't be horrendous since Canon lives off their camera products.[/citation]
Sensor noise will be similar to point and shoot or super zoom cameras because it will have insane pixel density. The closer the pixels are crammed together, the more noise you'll get. That's why an 8MP DSLR with a sensor the size of a postage stamp produces better image quality than a 12MP point and shoot with a sensor smaller than the nail on your pinky. It's like a small speaker, you can turn the volume up but at a certain level you'll start to get distortion.
And let's not forget that a long time ago, Canon announced a 50MP sensor but that did not go on production. Turned out that their 12MP sensor produced better quality than the 50MP one.