Ubuntu 20.04.1 - desktop, server and Cloud, contains mainly bug fixes for packages, reducing the time required to update new installations and focusing on maintaining stability and compatibility with Ubuntu 20.04 LTS.
Kubuntu 20.04.1 LTS, Ubuntu Budgie 20.04.1 LTS, Ubuntu MATE 20.04.1 LTS, Lubuntu 20.04.1 LTS, Ubuntu Kylin 20.04.1 LTS, Ubuntu Studio 20.04.1 LTS, and Xubuntu 20.04.1 LTS are also available now.
Users running Ubuntu 18.04 LTS "Bionic Beaver" will see a notification through Update Manager asking if they want to upgrade to Ubuntu 20.04.