The software development of Checkmk is organized in so called Werks. A Werk is any change or bug fix that has influence on the user's experience. Each Werk has a unique ID, one of the levels Trivial Change, Prominent Change or Major Feature and one of the classes Bug Fix, Feature or Security Fix.
Whenever you make an update to a new Checkmk version please make sure that you have understood all incompatible changes. You might have to adapt your configuration.
If you like to get informed about new werks, you can subscribe to various mailinglists which inform you about werks of specific levels.
Filter by category:
You can find a list of all werks including older versions here.