I guess that making a silent camera is not Sony's top priority.
Just a note to say I tried to A7/ A7R at Photo East today, and was pretty disappointed with how noisy it is. Its a really LOUD actuation when you press the shutter, and quite a surprise.
Yes, I appreciate its a focal plane camera, but it is one of the noisiest I've heard, and to my mind, that rather defeats the purpose of having a small, discreet body, for high quality candid work. With this amount of attention drawing noise, you may think why not continue with a D800/E, which seems quieter, despite having a mirror!
The Sony RX1/R seemed destined for discounting with the A7R providing 36Mp and interchangeable lenses in a similar sized body/price range. But I guess the RX1 has a future as the silent FF pro pocket camera, and in fact the the A7/R now seems a little unclear, to me at least, what it's concept is meant to be?