Sony is swimming against the current of increasingly higher density sensors and created a 12MP sensor for this camera. Personally, I am very excited. I do not need 36MP, or 24MP, or even 16MP; 12MP will be a perfect compromise between enlargeability and file size. Imagine the golf ball sized pixels on this sensor that will have very clean high ISO, and it most older lenses will perform much better because of the low density factor.
Can't wait to see how the good the image quality is. If Sony can keep the price the same as the A7, I will buy one.
Reflection - Canon FD 50mm f1.2 S.S.C & Olympus E-M5. Click for larger