Will ESM also become available for Ubuntu 14.04?

Solution 1:

Yes, ESM will be available for Ubuntu 14.04 LTS (trusty).

Solution 2:

As you can see on the chart which is shown below, Ubuntu 12.04 LTS has already been an end of life release since April, 2017, but its security maintenance has been extended for an additional 3 years until April, 2020, and the security maintenance of Ubuntu 14.04 has been extended for an additional 3 years until April, 2022. You can either pay for ESM on its own or sign up for Ubuntu Advantage which includes it.

Extended Security Maintenance (ESM) is free for personal use on up to 3 machines (limitations apply). All you need is an Ubuntu One account. Initially free subscription is available for Ubuntu 14.04 LTS only.

The next Extended Security Maintenance (ESM) release after 14.04 will be Ubuntu 16.04. Ubuntu 18.04 Extended Security Maintenance support will extend Ubuntu 18.04 support from 5 years to 10 years until April, 2028. Ubuntu 20.04 Extended Security Maintenance support will extend Ubuntu 20.04 support until April, 2030.

Ubuntu Core, with an image size of 260MB, is the smallest Ubuntu release to date. This makes it ideal both for IoT devices and cloud containers. A new release of Ubuntu Core is released every 2 years on even numbered years (2016, 2018, etc.). Ubuntu Core 18 is based on Ubuntu 18.04, and is supported for 10 years.