FZ100: Official Sample Images
You're basing this on Panasonic's own samples? Ha!
I've seen real world ISO 400 samples and this camera is simply an IQ test (in two different ways). Too bad the nice things, that they did include, are diminished, by the sensor.
The sensor did not improve. It's more over-stuffed; such that it's more of a perfect-light only camera (IMHO). Panasonic's trademark.
Noisy is, as noisy does.
This, and I have LOVED my FZ28; but it's getting old, and the devolution has lost them a customer. It's a royal foul-up.