Canonical has warned about the impending expiration of the five-year update release cycle for the Ubuntu 16.04 LTS distribution. As of April 30, 2021, official public support for Ubuntu 16.04 will cease. For users who need more time to migrate their systems to Ubuntu 18.04 or 20.04, the ESM (Extended Security Maintenance) program is offered, extending updates that fix vulnerabilities for the kernel and critical system packages until April 2024. Access to ESM updates is limited to users with a paid technical support subscription.
Source: opennet.ru
