The upcoming version of Ubuntu Linux, which is going to be called Noble Numbat and will be 24.04, is now in the feature freeze phase. This indicates that the development team will now be concentrating on fixing bugs rather than adding new features to the release after this point.
The Ubuntu Linux 23.04 operating system is no longer supported. It is scheduled to be archived on old-releases.ubuntu.com in the coming weeks, and no further package updates will be accepted for the 23.04 release.