More details here:
If this is the same sensor as in the NEX7 and A77 it is not as good in low light as the 16MP sensor previously used. Considering a lot of people seem to get low end dSLRs for improved low light image performance and autofocusing, I don't know why they Nikon did not use the latest version of the 16MP sensor. Most will be using lower end lenses which are not wide aperture anyway and it will test the limits of anything but perfect glass IMHO.
I suppose this will make a relatively cheap camera if you are interested in landscape photography!!
Here are sample pictures with the kit lens: