Micronaut Framework 4.10.13 patches two unbounded cache security vulnerabilities

Micronaut Framework 4.10.13 has been released, including updates to Micronaut Core, Micronaut Sourcegen, and Micronaut SQL. The release addresses two security vulnerabilities: an unbounded formattersCache in TimeConverterRegistrar and an unbounded bundleCache in ResourceBundleMessageSource. Users are strongly urged to upgrade to 4.10.13, or to 3.10.6 if still on Micronaut 3.

Micronaut Framework 5.0 sets Java 25 as minimum baseline

Micronaut Framework 5.0, planned for Q2 2026, will require Java 25 as its minimum baseline. This enables the framework to leverage modern Java features including Virtual Threads, Structured Concurrency, Scoped Values, Pattern Matching for switch, Record Patterns, and String Templates. The shift also brings performance improvements from Java 25, faster CI build times by dropping the multi-version test matrix, and updated documentation samples using modern Java syntax. Major cloud providers (AWS Lambda, AWS Elastic Beanstalk, Google Cloud Functions) already support Java 25, with Azure Functions and Oracle Cloud expected to follow. Users who need Java 17 or 21 support can remain on Micronaut Framework 4.x.

Uber migrates 75,000 test classes from JUnit 4 to JUnit 5 using OpenRewrite

Uber engineers migrated over 75,000 test classes and 1.25 million lines of code from JUnit 4 to JUnit 5 across their Java monorepo using automated code transformation. The team used OpenRewrite for deterministic source transformations and an internal orchestration system called Shepherd to apply changes across thousands of Bazel targets in parallel. Key challenges included Bazel's lack of native JUnit 5 support (solved via a unified JUnit Platform execution model with Vintage and Jupiter engines) and Uber-specific test patterns requiring custom transformation recipes. Generative AI was evaluated but rejected for inconsistent results. The iterative rollout validated changes through CI pipelines, achieving large-scale migration with minimal manual intervention. The approach is now being extended to Spring Boot 3 and other library migrations.

A2A Java SDK 1.0.0.Beta1 releases aligned with A2A Specification 1.0.0

The A2A Java SDK 1.0.0.Beta1 has been released, fully aligned with the final A2A Specification 1.0.0. This release introduces two structural breaking changes: Java packages renamed from io.a2a to org.a2aproject.sdk, and Maven groupId updated to org.a2aproject.sdk. Key highlights include equal support for JSON-RPC, gRPC, and HTTP+JSON/REST transports, structured error codes, HTTP caching headers for Agent Card, a new DataPart.fromJson() factory method, and flexible HTTP client support including JDK and Vert.x-backed clients for Quarkus. Several bug fixes address race conditions, terminal-state task handling, and HTTP spec compliance. The road to 1.0.0.GA will add cross-version protocol support and specification micro-update tracking.

Spring Boot 4.1.0-RC1 and multiple Spring projects release first release candidates

Multiple Spring ecosystem projects released their first release candidates during the week of April 20th, 2026. Spring Boot 4.1.0-RC1 adds OpenTelemetry Protocol SDK exporter support and improved transaction management. Spring Security 7.1.0-RC1 introduces a new anyOf() method and PreFlightRequestFilter support. Spring Integration 7.1.0-RC1 refactors RedisLockRegistry to leverage Redis 8.4+ native commands. Spring Modulith 2.1.0-RC1 adds a new @ModuleSlicing annotation and improved JobRunr transaction handling. Spring AMQP 4.1.0-RC1 adds setStopListenerOnFatal() and aligns @EnableAmqp with @EnableRabbit. Spring for Apache Kafka 4.1.0-RC1 introduces a ShareAckMode enum and AcknowledgementCommitCallback support. Spring LDAP 4.1.0-RC1 removes JUnit 4 constraints and refactors LdapClient. Spring Vault 4.1.0-RC1 adds support for HashiCorp Vault 2.0.

Azul Zulu OpenJDK joins Docker Official Images program

Azul Zulu Builds of OpenJDK have officially joined Docker's Official Images program after more than two years of review. The process involved pre-release validation, PM approval, and Docker's own build pipeline — ensuring images are scanned, reproducible, and maintained. The new images are available as `azul-zulu` without a namespace prefix, replacing the older `azul/zulu-openjdk` images which are planned for deprecation later in 2026. All Java versions including STS releases are supported. Enterprise customers also have access to Subscriber Availability (SA) images with extended security patches and priority updates.

Room 3.0 drops Java codegen and KAPT in favor of Kotlin-only output and KSP

Room 3.0 is a major update to Android's persistence library with several breaking changes. It drops Java code generation and Java Annotation Processing (KAPT) in favor of Kotlin-only output and KSP (Kotlin Symbol Processing). The library now uses KMP-compatible androidx.sqlite driver APIs instead of Android's native SupportSQLite, and adopts a coroutine-first model where all DAO functions are suspend functions or return Kotlin Flow. Platform support is expanded to include JavaScript and WebAssembly, with a new web asynchronous driver backed by Web Workers and OPFS. A compatibility wrapper (room-sqlite-wrapper) is available to ease migration. Room 2 enters maintenance mode, receiving only bug fixes on top of 2.8.0.

IntelliJ IDEA 2026.1.1 ships bug fixes for Gradle sync, Spring completion and WildFly

IntelliJ IDEA 2026.1.1 is a bug-fix release addressing several issues: WSL Python SDK setup is restored, Emmet works correctly in remote development, Gradle sync no longer fails with a class cast error, WildFly server connection is fixed, WSL 2 JDK detection is resolved, Ant target double-click now runs correctly, Spring project code completion is faster, WebLogic run configuration creation is fixed, and Find and Replace works properly on Enter.

Ubuntu 26.04 LTS ships OpenJDK 25 and drops X11 in major developer toolchain update

Jakarta Persistence 4.0 Milestone 2 ships criteria query improvements and new EntityGraph API

Jakarta Persistence 4.0 Milestone 2 has been released with several new features. Key additions include improvements to criteria queries with specialized expression types (ComparableExpression, TextExpression, etc.) that reduce verbosity, enhanced EntityGraph API with a new FetchOption interface and built-in BatchSize support, a new @EntityListener annotation that decouples listeners from entity classes, finer flush control via FlushModeType.EXPLICIT and QueryFlushMode, a StatementOrTypedQuery type for better type safety, and a @Discoverable meta-annotation enabling any class to host annotations like @NamedQuery in Jakarta EE containers.