1.17.0

Enhancements:

Allow directories to be forwarded to the sandboxed app as command-line arguments. This requires xdg-desktop-portal >= 1.7.0. (#6247)
Allow Flatpak apps that are conceptually part of the operating system to be preinstalled by dropping files into preinstall.d directories. (#6116)
Allow direct installation from an OCI image (#5972)
Allow OCI remotes to have a collection ID, so they can be used with flatpak preinstall (#6083)
Show a message if flatpak document-list finds no documents, and if flatpak uninstall finds nothing to uninstall (#6197)
Support sideloading from OCI repositories and archives. This allows installing apps from OCI images stored in local sideload repositories. (#6294)
Add support for flatpak+https:// URIs in flatpak install --from (#6372)
New --clear-env option for flatpak run to clear the environment from the host before running the application (#6298)

Enhancements:

Allow directories to be forwarded to the sandboxed app as command-line arguments. This requires xdg-desktop-portal >= 1.7.0. (#6247)
Allow Flatpak apps that are conceptually part of the operating system to be preinstalled by dropping files into preinstall.d directories. (#6116)
Allow direct installation from an OCI image (#5972)
Allow OCI remotes to have a collection ID, so they can be used with flatpak preinstall (#6083)
Show a message if flatpak document-list finds no documents, and if flatpak uninstall finds nothing to uninstall (#6197)
Support sideloading from OCI repositories and archives. This allows installing apps from OCI images stored in local sideload repositories. (#6294)
Add support for flatpak+https:// URIs in flatpak install --from (#6372)
New --clear-env option for flatpak run to clear the environment from the host before running the application (#6298)

flatpak