isolated applications or sandbox for Linux have been around for a long time. The first version of AppImage It appeared in 2004, but it was not until a decade later that this type of application really began to be used. Canonical released its version (snap), but the platform that most developers prefer, with GNOME in the lead, is the one that today has released a new version, Flatpack 1.14, with novelties that have focused on improving what already exists.
In version 1.12 they were already introduced sub-sandbox management improvements, something that benefited software like Steam, and in Flatpak 1.14 they have done it again, in this case allowing the sub-sandbox to hijack MPRIS names on the session bus.
Other Flatpak 1.14 news
Among the rest of the novelties we have improvements such as the commands that support the option --user now also allow an alias -u, the command line interface (CLI) now correctly informs the user of apps that are using extensions that have reached end of life, that the command to uninstall now asks for confirmation before removing runtimes that are in use, a memory corruption issue has been fixed and the SELinux policy has been updated to cover symlinks inside /var/lib/flatpak.
Flatpak 1.14 also introduces other changes, such as some made so that translators can work on full sentences rather than in separate multi-part chunks. Regarding the languages, the translations have been updated for languages such as German, Russian or Chinese.
Flatpak 1.14 can already be downloaded from its GitHub page, but it is best that we wait for our Linux distribution to add the new packages. For those who are interested in doing it on their own, both the detailed information and the tarball are available in this link.