Yes, if Canon would apply "Phase One P65+ technology" to the G10, we could obtain decent pictures up to ISO800 !
But even if it is possible, I'm almost sure that Canon will not make a firmware release to improve High ISO of the G10.
Marketing before
But perhaps it is "post-prodution" possible ?
So, Guillermo and others, is it possible to imagine a Raw Converter which would use same "4 pixel binning" to obtain a clean ISO800 3.6Mp picture ?!
Have a Nice Day.
Thierry