Spring Batch 6.0.0-M4 is now available. This milestone release introduces significant improvements. A key change is the migration to nullability checks using JSpecify annotations. This enhances null-safety guarantees and improves overall code quality. Developers can now catch potential null-related issues during compilation, leading to more robust applications. Furthermore, the domain model design of Spring Batch has been substantially improved. These improvements include better encapsulation of domain concepts. There is also a clearer separation of concerns within the framework. These changes are intended to make Spring Batch's core components easier to understand and use. The release notes provide a complete list of all changes.