• Upgrading from Spring Boot 3.3
• RestClient and RestTemplate
• Apache HTTP Components and Envoy
• Bean Validation of Configuration Properties
• Bean-based Conditions
• Graceful Shutdown
• Paketo tiny Builder for Building OCI Images
• Dynamic Properties with Testcontainers
• @AutoConfigureTestDatabase with Containers
• Controlling Access to Actuator Endpoints
• Cloud Foundry ConditionalOnAvailableEndpoint Exposure
• HtmlUnit 4.5
• Selenium HtmlUnit 4.25
• WebJars Locator Integration
• OkHttp Dependency Management Removed
• Netty in Native Image
• Deprecation of @MockBean and @SpyBean
• Tomcat APR
• Empty YAML Maps
• Deprecations from Spring Boot 3.2
• Minimum Requirements Changes
• Gradle
• New and Noteworthy
• Structured Logging
• @Fallback Beans
• Defining Additional Beans
• ClientHttpRequestFactory Builders
• Observability Improvements
• Application Groups
• OTLP
• Other Observability Updates
• AssertJ Support for MockMvc
• Spring Pulsar
• Couchbase Authentication
• FreeMarker
• Embedded Broker support with ActiveMQ Classic
• Configuration Metadata
• Deprecating and Replacing Auto-configuration Classes
• Base64 Resource Support and Automatic ProtocolResolver registration
• Virtual Threads
• Image Building Improvements
• Docker Compose Improvements
• Command Line Arguments
• Updated Support
• Testcontainers Improvements
• Actuator
• Pluggable Actuator Exposers
• SSL information and health check
• Additional info in /actuator/scheduledtasks endpoints
• Dependency Upgrades
• Miscellaneous
• Deprecations in Spring Boot 3.4