I recently helped a friend with a trust and Form 4s for six suppressors and the application is currently with the ATF. At present, only he and his wife are on the trust and I explained some of the changes that 41F will bring after July 13th. His question was if he decides to add a friend on the trust after July 13th, without adding any more suppressors, would the friend need to provide fingerprints and photographs? I can't see that he would since no more items are being added to the trust and you don't have to inform the ATF when you add/remove members of the trust.