They are not silent at all - today they released a promotional video on their website.
They are also preparing several dev units and were able to up the performance of Luke-Jr's unit to 34 GH/s.

While I am hear eager to receive what I ordered and prepaid 9 months ago, this is not the time to panic, nor is it a time to bitch and moan. If I want to hear bitching, I listen to my wife. If I want to hear moaning, I listen to "Bella", a trained professional.

In a nutshell: Good things come to those who wait.