Lubuntu 20.04 (Focal Fossa) was released April 23, 2020 and will reach End of Life on Friday, April 28, 2021. This means that after that date there will be no further security updates or bugfixes released for your Lubuntu packages. We highly recommend that you upgrade to Lubuntu 22.04 LTS as soon as possible if you are still running Lubuntu 20.04.
After April 28th, 2023, the only supported releases of Lubuntu will be 22.04 (until April 2025), 22.10 (until July 2023), and 23.04 (until Jan. 2024). All other releases of Lubuntu will be considered unsupported, and will no longer receive any further updates (or support) from the Lubuntu team.
You can find instructions on how to install or upgrade Lubuntu in our manual.
For further details please refer to our forum post.