Canonical launched Ubuntu 20.04 LTS Focal Fossa long-term service version on April 23, 2020. This version is the latest long-term service version launched by Canonical after the Ubuntu 18.04 LTS version launched in April 2018.
It is worth noting that the previous versions of Ubuntu 18.04 LTS provide 5 years of security support, but from Ubuntu 18.04 LTS Canonical announced that the support period of the Ubuntu LTS series long-term service version has been extended from 5 years to 10 years, such as the life cycle of Ubuntu 18.04 LTS. The support cycle of the latest Ubuntu 20.04 LTS version is from April 2020 to April 2030.
In Ubuntu 20.04 LTS, the Linux kernel has been upgraded to Linux Kernel 5.4, supports Intel Comet Lake series desktop processors (10th generation Comet Lake), and AMD Navi 12 and 14 GPUs, supports exFAT file system, supports Wireguard VPN, etc.
If you use the Ubuntu desktop version, you can directly open the update manager to check the latest version. After checking the latest version, directly download and install and follow the prompts to upgrade and restart. You can also use the command update-manager -c -d to upgrade, if you can not check the update, please execute the command to check: /usr/lib/ubuntu-release-upgrader/check-new-release-gtk.
If you use the Ubuntu server version: If you have not installed an update-manager-core, please install it first. After installation, use sudo do-release-upgrade -d to start the upgrade tool and follow the prompts.