I take lots of digital photos and 5mpx is PLENTY! (Even 3 is enough for most everything). At that capacity, the optics and sensor quality plays a bigger role. It's about making each pixel look good rather than the number of pixels. Such as you don't want dark blurry photos full of noise, even with 100 mega-pixels. Optical zoom is also a whole lot better than digital zoom, but I don't expect this on Nokia devices anytime soon.

800x480 is also plenty for the screen. If some magic 3" screen had 2560 x 1600, you can't read the text without a microscope. Or, if you increase the font size to a readable size, it won't look much better than 800x480.

my 2 cents worth..