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Key updates and highlights across the Spring portfolio corresponding to a specific Spring Boot version.
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Project updates associated with this release
11 projects updated as part of the Spring Boot 4.1 release train.
Spring Boot
v4.1.0- Spring gRPC SupportProvides support for writing and testing gRPC server and client applications, including standalone servers backed by Netty or using Servlet integration to expose gRPC over HTTP/2.
- HTTP Client SSRF MitigationReactive and blocking HTTP clients can now be configured with an InetAddressFilter to block outgoing requests to specific addresses, hardening applications against SSRF attacks.
- Observability ImprovementsContext can be automatically propagated to methods running on a separate thread using @Async. Also includes OpenTelemetry enhancements and SSL bundle support for OTLP.
- File Rotation Support for Log4jSupport for configurable file rotation has been added for Log4j, with four strategies: size, time, size-and-time, and cron.
Spring Data
v2026.0.0- Type-safe Property PathsSupport for type-safe property paths and property references in Java and Kotlin to remove the need for stringly-typed programming when referring to properties within an entity.
- Single-statement upsertSpring Data JDBC and R2DBC can persist a root aggregate with a single upsert statement when the identifier is already known.
- Multi Collection Bulk Write API for MongoDBIssue a single request with mixed insert, update, and delete operations across multiple collections using MongoOperations.bulkWrite.
- Annotation-driven Pub/Sub Listener Endpoints for RedisSupport for annotation-driven Pub/Sub Listener Endpoints built on Spring Messaging using @RedisListener.
Spring Security
v7.1.0- Publish Authentication Events in WebAuthnAuthentication events are now published during WebAuthn flows.
- Added InetAddressMatcherIntroduced InetAddressMatcher in the core module for IP address matching capabilities.
- Add RestClientOpaqueTokenIntrospectorAdded RestClientOpaqueTokenIntrospector for OAuth 2.0 opaque token introspection using RestClient.
Spring Kafka
v4.1.0- @KafkaListener ackModeThe @KafkaListener annotation now supports an ackMode attribute, allowing individual listeners to override the container factory's default acknowledgment mode.
- Share Consumer EnhancementsUpdates include new Acknowledgment Modes, Async Commits, Error Handling, and Lifecycle Events for Share Consumers.
- Kafka Streams Native DLQ SupportProvides exception handlers that support Kafka Streams DLQ for recovering deserialization, processing, and production exceptions.
Spring Integration
v7.1.0- CloudEvents SupportThe new spring-integration-cloudevents module has been introduced to support the CloudEvents specification.
- gRPC SupportThe new spring-integration-grpc module has been introduced to support the gRPC framework.
- HTTP and RestClientThe HttpRequestExecutingMessageHandler now can be used with a RestClient, deprecating the previous RestTemplate configuration.
Spring Modulith
v2.1.0- Event Externalization ImprovementsSupport for an outbox mode in event externalization via Namastack and JobRunr.
- Cross-Thread Event VisibilityOpened up PublishedEvents and Scenario to see events from all threads by default during testing.
- Application Module TestingAdded support for application module testing in combination with Boot's slice test support.
Spring AI
v2.0.0- Improved FoundationsUpgrades to Spring Boot 4.0 as the baseline, Jackson 3, introduces full null-safety with JSpecify, and completely refactors how options and configuration properties are handled.
- Agentic Support ImprovementsLifts tool loops into the advisor chain as first-class, composable components. This enables unified tool calling, progressive tool disclosure via ToolSearchToolCallingAdvisor to scale to hundreds of tools, and self-correcting structured outputs via StructuredOutputValidationAdvisor.
- Model Context Protocol IntegrationShips with MCP SDK 2.0.0 and introduces an annotation-driven programming model (@McpTool, @McpResource, @McpPrompt) for exposing Spring services. It features Streamable HTTP as the new default transport and adds production capabilities like Micrometer tracing and OAuth 2.0 security.
Spring Session
v4.1.0- Moves Spring Session Hazelcast to Hazelcast teamSpring Session Hazelcast is now led and maintained by the Hazelcast team.
- Moves Spring Session MongoDB Team to MongoDB teamSpring Session MongoDB is now led and maintained by the MongoDB team.
Spring HATEOAS
v3.1.0- Caching in StringLinkRelationImproved caching mechanism in StringLinkRelation for better performance.
- Spring Framework CompatibilityAdapt TypeConstrainedJacksonJsonHttpMessageConverter.canWrite to align with changes in Spring Framework 7.
Spring AMQP
v4.1.0- AMQP 1.0 ClientA new spring-amqp-client module has been introduced to provide support for interacting with the generic AMQP 1.0 protocol.
Spring LDAP
v4.1.0- Mandatory Single Result SupportAdded support for requiring a mandatory single result in LdapClient search operations.
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