https://ubuntustudio.org/2020/04/ubuntu-studio-20-04-lts-released/ (раздел «Desktop Environment»).
Для Ъ: «Ubuntu Studio 20.04 LTS will be the final release of Ubuntu Studio using the Xfce Desktop Environment. As such, upgrades from Ubuntu Studio 20.04 to later releases may result in breakage.
„Future versions of Ubuntu Studio, beginning with 20.10, will be using the KDE Plasma Desktop Environment by default. Plasma has proven to have better tools for graphics artists and photographers, as can be seen in Gwenview, Krita, and even the file manager Dolphin. Additionally, it has Wacom tablet support better than any other desktop environment.“