I know this comes close on the heels of shipping TFS 2017 Update 1, but we are working on another Update to TFS 2015. For those who are up for it, I encourage you to upgrade to TFS 2017 Update 1, however, if there are reasons you really want to stay on 2015 a little longer, Update 4 might be useful to you.
Update 4 only contains bug fixes...