Canonical: Future Ubuntu Releases Won’t Support Flatpak by Default
Canonical, the maker of Ubuntu, announced that future Ubuntu releases (including official flavors) will not include support for the Flatpak sandboxed binary format by default, starting with Ubuntu 23.04.
This should not come as a surprise for anyone as Ubuntu, like many other popular GNU/Linux distributions out there, didn’t offer support for the Flatpak binary format by default. Those who wish to install Flatpak apps will need to manually install the Flatpak Runtime by following the instructions on the official website.