Camel 4.0.0 has been released on 2023-08-14. As of now, this is the current LTS. The next LTS (4.4.0) is expected to be released in Jan/Feb 2024.

The new release broght some changes. The most notably change is the switch from javax to jakarta. But internal APIs of camel changed as well. The most notable changes are listed in the official migration guide (camel.apache.org).

It is desirable to support Camel in version 4.0.0.