Languages and runtimes

Spring Boot 4.1.0 released

2026-06-13 digest confirmed

  • Category: Languages
  • Status: confirmed
  • Sources: GitHub release, 4.1 release notes
  • Summary: Spring Boot 4.1.0 reached general availability on 2026-06-10. New features include first-class gRPC server and client support with standalone Netty and HTTP/2 servlet options, auto-configuration of Jackson read and write features through spring.jackson.read. and spring.jackson.write. properties, expanded OpenTelemetry configuration (SDK disable toggle, batch log processor, sampler, span and log limits, OTLP exemplars), and SSRF mitigation via an InetAddressFilter for both reactive and blocking HTTP clients. The release deprecates Derby database support, removes the deprecated layertools jar mode, and changes Maven so -DskipTests no longer skips AOT processing (use maven.test.skip). It bundles Spring Framework 7.0.8, Spring Security 7.1.0, Netty 4.2.15, Tomcat 11.0.22, and Hibernate 7.4.1.
  • Why it matters: Teams on the Spring Boot 4.x line get native gRPC and built-in SSRF filtering, while the Derby deprecation and layertools and Maven AOT changes are concrete migration steps for upgraders.
  • Follow-up: Track 4.1.x patch cadence and any 4.0.x to 4.1 migration friction reports.

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