As of March 15, there were 10 BTD given based on Margaret Hamburg's Massachusetts speech. Today, over a month later, only 7 have been made public. This delay from designation to announcement has occurred, without exception, to all BTDs given since last November. When I corresponded with the FDA's BTD office, they wouldn't elaborate on the process when I asked if the delay was due to additional information requested by the agency regarding manufacturing and commercialization strategies, etc. None of the BTD companies' IR departments would elaborate either. Until formal guidance is issued it seems as though we're going to be in the dark.