We have received rumors that say Sony will feature a new 16MP sensor in the upcoming Sony NEX-5R that is expected to be released in a few weeks time.
That sensor is a new 16MP sensor that will have PDAF support integrated in sensor. Canon uses a similar technology in their Canon EOS M compact system camera series and may represent an overall improvement for a vast majority of compact system cameras.
As for the Sony NEX-6 it is still not confirmed if sensor will be the same but seems likely so. This means those two cameras will feature a more advanced technology than the Sony NEX-7.
It is known Sony produces sensors for several camera manufacturers such as Nikon, Pentax, Olympus. Therefore this may come as very big news specially for Four Thirds users as this may mean that their four thirds lenses may be fully supported in future by Olympus as those lens are optimized for PDAF focusing whilst current micro four thirds sensors only work with CDAF.
A hybrid solution may prove to be the best of both worlds providing a large multitude of lens to be fully supported by compact system cameras.