Ubuntu 20.04, Focal Fossa, was released on 23 April. It is available for download at https://ubuntu.com/#download. The other seven Ubuntu “flavors” can also be downloaded from links on that page. If you plan to upgrade instead of doing a fresh install, it is recommended that you wait until the first point release of the version which is expected some time in July of this year. Otherwise, download and install away. Happy Ubuntu-ing.