Spring Boot 4.0 Release: Major Upgrades, Build‑Time Optimizations, and AI Roadmap

Spring Boot 4.0 launches alongside Spring Framework 7, Spring Data 2025.1 and Spring AI 1.1, delivering a sweeping upgrade that moves the stack to Jakarta EE 11, JDK 25, JSpecify null‑safety, build‑time optimizations, native OpenTelemetry support, and a dual‑track AI strategy.

JavaOpenTelemetrySpring Framework

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Spring Boot 4.0 Release: Major Upgrades, Build‑Time Optimizations, and AI Roadmap