Official support for Ubuntu 19.10 ‘Eoan Ermine’ ended on July 17, 2020.
Enthusiasts engaged on the extant edition past this date will need (read: want) to expedite plans to emigrate to the next available release, which is the fabulously fast Ubuntu 20.04 ‘Focal Fossa’.
If you use Ubuntu 19.10 beyond July 17 you will not get any further updates
The Ubuntu 19.10 release arrived on October 17, 2019. As a non-LTS release it gets 9 months of on-going app updates and security patches.
And those 9 months are now up.
After July 17 you won’t get new versions of Firefox automatically or any critical security patches. Many third-party developers also stop building packages for unsupported Ubuntu releases.
The good news is that it’s easy to upgrade to Ubuntu 20.04 LTS from 19.10. Like: “click a button” easy. And with GNOME 3.36, a newer Linux kernel, and flicker-free boot experience to enjoy, there’s plenty of incentive for you to do so!
A half-way decent internet connection, a spare 20 minutes, and a mug of something hot is all you need (okay: drink is optional) to migrate over. No reinstall necessary.
And don’t forget: Ubuntu 20.04 is a long-term support release backed by 5 years of ongoing updates, patches, and new kernel releases. Which means once you upgrade to it you have the choice to not upgrade to anything else until 2025!