Ubuntu 15.10 (Wily Werewolf) to Reach End of Life on July 28, 2016

Announced on October 22, 2015, Ubuntu 15.10 was dubbed by Canonical and Ubuntu founder Mark Shuttleworth as Wily Werewolf, the first codename based on a fictional character, not a real animal like the others. Ubuntu 15.10 is not an LTS (Long Term Support) release, which means that it has a short-life support cycle for security fixes and software updates. End of life for Ubuntu 15.10 has been set for July 28, 2016, and users are urged to update to Ubuntu 16.04 LTS until then.