Endless OS 4.0.4 was released on 6th April 2022.
For full details on what's new in Endless OS 4, please see the release notes for Endless OS 4.0.0.
This release fixes the following security vulnerabilities in the Linux kernel.
Because Endless OS updates are installed in the background, it is possible that a new version of Endless OS is installed for quite some time before the computer restarts into the new version – even weeks or months. In past versions of Endless OS, some system configuration changes made in the time between when an update is installed and the time when it is booted would be lost, such as changes to Wi-Fi configuration and new user accounts.
Starting in Endless OS 4.0.4, the final step of installing an OS update now happens when the computer is shutting down or restarting, which prevents this problem from occurring. Because this is a change to the OS updater, it only affects OS updates which are downloaded after the system has first been updated to 4.0.4 or newer.
This release contains a bug fix for OSTree to ensure that it can recover if an OS or app download is interrupted. This may avoid situations where the system would no longer be able to install OS or app updates.
Technical information on this fix can be found here.
rpmfiles to correctly direct the user to the App Center (and perhaps an equivalent app available there).
If you want to test beta releases of Endless OS, follow these instructions.