Downloaded the demo and gave it a go. First impressions... not a quantum leap from FS9 but is clearly better in parts, albeit with a buggy demo. It does at first appear a bit like CFS3 with an apparenly cartoony image but that seems to be how blurred scenery looks in FSX - when the blurries clear it is much better; whether scenery remaining blurry is the result of the performance issues I couldn't tell you (if not then :sad: ). I flew most of the default a/c over day/night/dawn/dusk and I thought it quite enjoyable (the dawn colour pallette is far too cold for summer in the Carribean but would work well in Northern Europe or US).
Given the demo is designed to show off the visuals then (if you ignore the performance issues and bugs - a bit of an ask I know) then it does this quite well (the shiny shiny sea is rubbish though). What we can't tell from this is is how the flight dynamics work and I suppose for that we will have to wait for the full release

If all the performance issues are fixed and all of the identified bugs then it is likely that I will buy it (anyway got to have something as a Birthday pressie).
Regards,
Chris