Ubuntu MATE 16.04 LTS reached end of life on 30 April 2019.
As we're an official flavour of Ubuntu, our LTS releases are supported for 3 years, as opposed to regular Ubuntu's 5 years. This means MATE components of your system will no longer receive updates after today, but foundational components will continue to receive security updates from Ubuntu.
To check the support level of your system, run this command in the Terminal:
To continue the retrospective future, we recommend upgrading to Ubuntu MATE 18.04 LTS or later.
If you're still running 16.04 LTS and are not ready to upgrade, don't panic! Your system will still be as secure as the Ubuntu base until April 2021, but please bear in mind some of your packages and applications will no longer receive updates.
On a side note:
- Ubuntu 14.04 (regular version) also reached end of life today.
- PowerPC support for Ubuntu MATE has officially been discontinued. 16.04.1 was the last build released.