Today OSTicket put out the next RC of the 1.7 tree. OSTicket version 1.7 Release Candidate 4 (RC4) became available today at 2:13pm EST. At this time the WHATS NEW has not been updated to reflect the changes. However the following bug has been addressed:
"When a client replies to a ticket from the osTicket client ui, the admin receives 2 emails with the same content."
Once they have a list of changes I will update this post.