Keep in mind that they are a relatively small company and most of them are at NAMM currently. This coupled with prepping for shipments of the analog keys and also for release of the new AR, means they are probably pretty insanely busy.
That said, weeks of silence is inexcusable and last year, this would have been unheard of from this company. As of late it seems that they are becoming more and more distant with the people that have put them in the spotlight. Hopefully they are not getting too big for themselves.
Best of luck. The a4 is amazing.