• Spring Boot 4.0.0-M2 Release Notes
• Upgrading from Spring Boot 3.5
• Removed Support for javax.annotations.NonNull
• Elasticsearch Client
• Kafka Streams Customization
• Actuator Endpoint Optional Parameters
• New and Noteworthy
• Dependency Upgrades
• Miscellaneous
• Deprecations in Spring Boot 4.0.0-M2