Very soon, the pixels will stop being the limiting factor, and other things will become the bottle-neck: optics, diffraction [limit].
Actually, I remember seeing recently some estimates that indicate that
the resolution of the cheap lenses is already more limiting
than the higher-end DSLR's sensor pixelation.

And with the small-sensor P&S's, the diffraction limit starts being noticeable from f/4-f/5.6 but can actually play some role from f/2.8 (on a 1/2.3" sensor).
Here is just one of many write-ups that discusses that:
http://www.digitalversus.com/digital-camera/guide-diffraction-camera-sensors-a1010.html

Cheers,

Igor


CollinB Fri, 24 Apr 2015 12:06:04 -0700 wrote:

As Tue tech improves how far can it go? Will our current 16Mp be laughable in just 2 years if soon we might get 30-40Mp on the low end with this technology?

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