Release Notes
https://suricata-ids.org/2017/07/13/suricata-4-0-0-rc2-ready-for-testing/
Redmine tracker
https://redmine.openinfosecfoundation.org/versions/99
Download
https://www.openinfosecfoundation.org/download/suricata-4.0.0-rc2.tar.gz
https://www.openinfosecfoundation.org/download/suricata-4.0.0-rc2.tar.gz.sig