NTF announced the release of ntp-4.2.8p7 on 26 April 2016. This release contains fixes for nine low and medium severity security-related issues, two security issue mitigations, 16 bug fixes, and code improvements since ntp-4.2.8p6, which was released on 19 January 2016.
See the 26 April 2016 Security Announcement for more details.