The first point release update to Kubuntu 22.04 LTS (Jammy Jellyfish) is out now. This contains all the bug-fixes added to 22.04 since its first release in April 2022. Users of 22.04 can run the normal update procedure to get these bug-fixes.
The first point release is also significant because it is the default upgrade version for users of Kubuntu 20.04 LTS (Focal Fossa).
See the Ubuntu 22.04.1 LTS Release Announcement, the Ubuntu 22.04.1 Release Notes, and the Kubuntu Release Notes.