Already end of last year the integration of Spring Boot 4 has started. We have considered different approaches to integrate Spring Boot 4 / Spring Framework 7 support. At the end, we decided that the SB4/SF7 support is a trigger for making a 2.0 release of Operaton real, i.e. we will not integrate this into the Operaton 1.x release stream.
As a consequence, the roadmap has been updated, and we decided to release Operaton 2.0 in April. Further we have defined a release plan that includes releasing different milestone releases up front.
The first milestone, 2.0.0-M1, is planned to be released this friday Jan 23th 2026. As a preparation, we started building and publishing the Docker images for the upcoming milestone release. Find tag `2.0.0-M1-SNAPSHOT` now on DockerHub.
I am exploring the possibility to deploy snapshot versions of the Maven artifacts by nightly build. This is not yet finished.
Please take the chance to test the milestone release, ideally prior its release, and provide feedback. To use Operaton with Spring Boot 4 you will have nothing else to do but upgrade the dependency version. However, this will pull in Spring Boot 4 into your application, and your application likely needs adoption to SB4 itself. Because of that need we decided to signal this as a major version increment.