Dear Art,
it seems that (at least some of) the boutique editions are delivered to selected Tourbillon Boutiques in the U.S. Please refer to this Facebook post by the manufacture: https://m.facebook.com/story.php?story_fbid=1733964663524588&substory_index=0&id=1374723796115345&__tn__=%2As
The 2016 novelties have started their roll-out almost four weeks ago. They have been available in Munich two weeks ago. They should have reached your regular sources in the meantime.
Best regards, Martin